x

*Want to search a historical price chart of products or the lowest ever price? Search for the name of the product or paste the product's link in the search box and hit enter. you will see the product's historical milestone prices, charts, and all current offers with Price History. Do check Amazon Price Tracker and Flipkart Price Tracker for price traking.

Brother XM2701 Lightweight Sewing Machine 27 Stitches
18th Jul 2026, 07:38 PM

Brother XM2701 Lightweight Sewing Machine 27 Stitches | 27 Built-in Stitches, 1-Step Auto-Size Buttonhole, Needle Threader, Jam-Resistant Top Drop-in Bobbin

Price may vary by location, shipping cost, and availability.
0% Off
$149.00
$149.00

Highest: $247.67
Average: $126.16
Lowest: $38.99

Should you buy at this price?

Skip
Wait
Okay
Yes

Based our analysis and observation, there is 55.18% chance that the price of Brother XM2701 Lightweight Sewing Machine 27 Stitches... will increase. Price of product might fluctuate between 2% and 6% of current price.*

Price History Graph

Offer Price Prices
Lowest: -
Average: -
Highest: -

Price History Information

You can check the price history of Brother XM2701 Lightweight Sewing Machine 27 Stitches | 27 Built-in Stitches, 1-Step Auto-Size Buttonhole, Needle Threader, Jam-Resistant Top Drop-in Bobbin here. This product's current Price in USA is $149.00. The average and highest prices are $126.16 and $247.67 respectively.

Lowest Ever Price $38.99
3rd Apr 2017
Average Price $126.16
Based on 4485 days price tracking
Highest Price $247.67
29th Nov 2021

Price History of All Variants of Brother XM2701 Lightweight Sewing Machine 27 Stitches...

Current Price in USA

Price $149.00
MRP $149.00
Savings $0.00
Discount 0%

Recent Price Drops on Brother XM2701 Lightweight Sewing Machine 27 Stitches | 27 Built-in Stitches, 1-Step Auto-Size Buttonhole, Needle Threader, Jam-Resistant Top Drop-in Bobbin

Price Drop 23rd Jan 2026
$129.99 $119.15
8.34% drop
Price Drop 6th Jul 2025
$117.73 $103.14
12.39% drop
Price Drop 22nd Jun 2025
$126.67 $117.73
7.06% drop
Price Drop 15th Jun 2025
$128.84 $117.73
8.62% drop
Price Drop 11th Jun 2025
$129.90 $117.73
9.37% drop
Price Drop 7th Jun 2025
$128.84 $117.73
8.62% drop
Price Drop 4th Jun 2025
$126.36 $117.74
6.82% drop
Price Drop 27th May 2025
$125.75 $117.13
6.85% drop
Price Drop 16th Nov 2024
$127.99 $107.41
16.08% drop
Price Drop 13th Nov 2024
$127.99 $107.41
16.08% drop
Price Drop 29th May 2024
$149.00 $129.99
12.76% drop
Price Drop 25th Dec 2023
$191.06 $129.99
31.96% drop
Price Drop 20th Dec 2023
$198.99 $129.99
34.68% drop
Price Drop 18th Dec 2023
$177.60 $129.99
26.81% drop
Price Drop 10th Dec 2023
$169.99 $129.99
23.53% drop
Price Drop 31st Oct 2023
$129.95 $119.99
7.66% drop
Price Drop 3rd Oct 2023
$129.98 $121.99
6.15% drop
Price Drop 29th Aug 2023
$126.95 $119.99
5.48% drop
Price Drop 14th Aug 2023
$139.95 $129.99
7.12% drop
Price Drop 12th Aug 2023
$141.55 $129.99
8.17% drop
Price Drop 11th Aug 2023
$143.69 $129.99
9.53% drop
Price Drop 22nd Jul 2023
$117.45 $99.99
14.87% drop
Price Drop 27th Jun 2023
$129.44 $80.45
37.85% drop
Price Drop 8th Jun 2023
$145.24 $129.99
10.5% drop
Price Drop 5th Jun 2023
$153.48 $129.99
15.3% drop
Price Drop 17th May 2023
$147.50 $126.00
14.58% drop
Price Drop 13th May 2023
$148.00 $126.90
14.26% drop
Price Drop 11th Apr 2023
$140.00 $129.99
7.15% drop
Price Drop 1st Apr 2023
$148.00 $140.00
5.41% drop
Price Drop 2nd Mar 2023
$129.99 $99.99
23.08% drop
Price Drop 28th Feb 2023
$169.04 $129.99
23.1% drop
Price Drop 24th Feb 2023
$160.15 $99.99
37.56% drop
Price Drop 6th Feb 2023
$144.64 $125.00
13.58% drop
Price Drop 2nd Feb 2023
$144.64 $129.99
10.13% drop
Price Drop 26th Jan 2023
$151.20 $142.99
5.43% drop
Price Drop 9th Jan 2023
$159.99 $151.20
5.49% drop
Price Drop 4th Jan 2023
$169.04 $159.99
5.35% drop
Price Drop 27th Dec 2022
$179.22 $169.04
5.68% drop
Price Drop 17th Dec 2022
$166.35 $129.99
21.86% drop
Price Drop 13th Dec 2022
$186.36 $129.99
30.25% drop
Price Drop 7th Dec 2022
$186.36 $175.99
5.56% drop
Price Drop 4th Dec 2022
$188.83 $129.99
31.16% drop
Price Drop 2nd Dec 2022
$151.99 $129.99
14.47% drop
Price Drop 30th Nov 2022
$159.99 $151.99
5% drop
Price Drop 28th Nov 2022
$172.00 $162.21
5.69% drop
Price Drop 15th Nov 2022
$129.99 $120.00
7.69% drop
Price Drop 11th Nov 2022
$147.50 $129.99
11.87% drop
Price Drop 29th Oct 2022
$129.99 $99.99
23.08% drop
Price Drop 22nd Oct 2022
$129.99 $99.99
23.08% drop
Price Drop 14th Oct 2022
$129.99 $99.99
23.08% drop
Price Drop 25th Sep 2022
$149.32 $129.99
12.95% drop
Price Drop 8th Sep 2022
$149.32 $129.99
12.95% drop
Price Drop 3rd Sep 2022
$149.32 $129.99
12.95% drop
Price Drop 18th Aug 2022
$149.32 $129.99
12.95% drop
Price Drop 10th Aug 2022
$149.32 $129.99
12.95% drop
Price Drop 20th Jul 2022
$149.32 $129.99
12.95% drop
Price Drop 15th Jul 2022
$165.00 $149.32
9.5% drop
Price Drop 14th Jun 2022
$129.99 $99.99
23.08% drop
Price Drop 28th Apr 2022
$195.59 $129.99
33.54% drop
Price Drop 25th Apr 2022
$208.90 $195.99
6.18% drop
Price Drop 18th Apr 2022
$214.95 $151.20
29.66% drop
Price Drop 17th Apr 2022
$200.00 $151.20
24.4% drop
Price Drop 15th Apr 2022
$212.99 $200.00
6.1% drop
Price Drop 4th Mar 2022
$232.00 $144.00
37.93% drop
Price Drop 21st Feb 2022
$245.60 $199.99
18.57% drop
Price Drop 1st Feb 2022
$245.60 $225.00
8.39% drop
Price Drop 28th Jan 2022
$245.60 $225.00
8.39% drop
Price Drop 7th Dec 2021
$247.63 $227.66
8.06% drop
Price Drop 1st Dec 2021
$247.67 $129.99
47.51% drop
Price Drop 28th Nov 2021
$230.67 $129.99
43.65% drop
Price Drop 5th Oct 2021
$166.11 $144.00
13.31% drop
Price Drop 13th Sep 2021
$173.20 $144.00
16.86% drop
Price Drop 12th Sep 2021
$169.00 $144.00
14.79% drop
Price Drop 10th Aug 2021
$139.99 $118.03
15.69% drop
Price Drop 1st Aug 2021
$139.63 $118.03
15.47% drop
Price Drop 23rd Jul 2021
$137.37 $118.03
14.08% drop
Price Drop 14th Jul 2021
$139.99 $118.03
15.69% drop
Price Drop 4th Jul 2021
$139.99 $118.03
15.69% drop
Price Drop 29th Jun 2021
$139.00 $118.03
15.09% drop
Price Drop 3rd May 2021
$139.99 $91.96
34.31% drop
Price Drop 27th Apr 2021
$145.62 $93.00
36.14% drop
Price Drop 10th Apr 2021
$139.63 $99.99
28.39% drop
Price Drop 4th Apr 2021
$99.99 $93.50
6.49% drop
Price Drop 21st Mar 2021
$96.96 $87.94
9.3% drop
Price Drop 11th Mar 2021
$87.94 $78.83
10.36% drop
Price Drop 8th Mar 2021
$139.99 $80.83
42.26% drop
Price Drop 28th Feb 2021
$141.98 $87.94
38.06% drop
Price Drop 25th Jan 2021
$96.93 $90.94
6.18% drop
Price Drop 19th Jan 2021
$105.94 $97.94
7.55% drop
Price Drop 9th Jan 2021
$167.48 $99.99
40.3% drop
Price Drop 5th Jan 2021
$172.50 $99.99
42.03% drop
Price Drop 2nd Jan 2021
$158.40 $147.99
6.57% drop
Price Drop 30th Dec 2020
$161.09 $99.99
37.93% drop
Price Drop 25th Dec 2020
$197.50 $99.99
49.37% drop
Price Drop 17th Dec 2020
$192.75 $99.99
48.12% drop
Price Drop 15th Dec 2020
$229.95 $199.00
13.46% drop
Price Drop 8th Dec 2020
$172.99 $121.18
29.95% drop
Price Drop 2nd Dec 2020
$182.17 $172.99
5.04% drop
Price Drop 26th Nov 2020
$137.41 $99.99
27.23% drop
Price Drop 24th Nov 2020
$149.99 $99.99
33.34% drop
Price Drop 20th Nov 2020
$178.54 $154.90
13.24% drop
Price Drop 14th Nov 2020
$166.00 $99.99
39.77% drop
Price Drop 12th Nov 2020
$151.38 $99.99
33.95% drop
Price Drop 10th Nov 2020
$157.69 $99.99
36.59% drop
Price Drop 8th Nov 2020
$99.99 $93.50
6.49% drop
Price Drop 7th Nov 2020
$149.06 $99.99
32.92% drop
Price Drop 24th Oct 2020
$168.00 $99.99
40.48% drop
Price Drop 21st Oct 2020
$209.99 $99.99
52.38% drop
Price Drop 16th Oct 2020
$185.92 $99.99
46.22% drop
Price Drop 15th Oct 2020
$188.99 $99.99
47.09% drop
Price Drop 13th Oct 2020
$160.99 $147.99
8.08% drop
Price Drop 4th Oct 2020
$120.00 $99.99
16.68% drop
Price Drop 19th Sep 2020
$138.00 $95.71
30.64% drop
Price Drop 15th Sep 2020
$159.37 $148.27
6.96% drop
Price Drop 15th Sep 2020
$148.27 $93.50
36.94% drop
Price Drop 12th Sep 2020
$159.99 $99.99
37.5% drop
Price Drop 9th Sep 2020
$132.00 $97.40
26.21% drop
Price Drop 4th Sep 2020
$153.00 $99.99
34.65% drop
Price Drop 4th Sep 2020
$99.99 $94.51
5.48% drop
Price Drop 31st Aug 2020
$215.80 $99.99
53.67% drop
Price Drop 20th Aug 2020
$240.88 $228.00
5.35% drop
Price Drop 16th Aug 2020
$220.00 $99.99
54.55% drop
Price Drop 11th Aug 2020
$233.00 $220.00
5.58% drop
Price Drop 5th Aug 2020
$245.00 $228.00
6.94% drop
Price Drop 2nd Aug 2020
$203.00 $169.00
16.75% drop
Price Drop 27th Jul 2020
$215.66 $188.00
12.83% drop
Price Drop 21st Jul 2020
$219.97 $186.17
15.37% drop
Price Drop 13th Jul 2020
$203.77 $183.76
9.82% drop
Price Drop 13th Jul 2020
$183.76 $93.07
49.35% drop
Price Drop 10th Jul 2020
$189.77 $93.79
50.58% drop
Price Drop 7th Jul 2020
$208.73 $197.75
5.26% drop
Price Drop 2nd Jul 2020
$234.75 $219.73
6.4% drop
Price Drop 29th Jun 2020
$233.00 $205.00
12.02% drop
Price Drop 25th Jun 2020
$234.77 $219.80
6.38% drop
Price Drop 18th Jun 2020
$170.75 $96.40
43.54% drop
Price Drop 16th Jun 2020
$172.57 $94.56
45.2% drop
Price Drop 13th Jun 2020
$184.70 $174.66
5.44% drop
Price Drop 4th Jun 2020
$194.77 $93.78
51.85% drop
Price Drop 27th May 2020
$227.77 $90.72
60.17% drop
Price Drop 18th May 2020
$199.00 $89.73
54.91% drop
Price Drop 13th May 2020
$139.00 $71.74
48.39% drop
Price Drop 7th May 2020
$216.98 $71.96
66.84% drop
Price Drop 3rd May 2020
$216.98 $103.68
52.22% drop
Price Drop 21st Apr 2020
$199.99 $77.36
61.32% drop
Price Drop 2nd Apr 2020
$115.96 $82.98
28.44% drop
Price Drop 17th Mar 2020
$93.49 $87.00
6.94% drop
Price Drop 4th Feb 2020
$107.58 $85.00
20.99% drop
Price Drop 9th Jan 2020
$93.49 $85.00
9.08% drop
Price Drop 31st Dec 2019
$107.58 $85.00
20.99% drop
Price Drop 28th Dec 2019
$108.12 $85.00
21.38% drop
Price Drop 25th Dec 2019
$118.00 $108.72
7.86% drop
Price Drop 25th Dec 2019
$108.72 $85.00
21.82% drop
Price Drop 20th Dec 2019
$110.12 $85.00
22.81% drop
Price Drop 18th Dec 2019
$197.24 $108.77
44.85% drop
Price Drop 8th Dec 2019
$84.00 $74.99
10.73% drop
Price Drop 21st Nov 2019
$85.00 $76.00
10.59% drop
Price Drop 30th Sep 2019
$84.99 $68.63
19.25% drop
Price Drop 15th Aug 2019
$99.99 $84.98
15.01% drop
Price Drop 14th Jun 2019
$114.37 $84.99
25.69% drop
Price Drop 5th Jun 2019
$93.44 $84.99
9.04% drop
Price Drop 8th Apr 2019
$93.44 $85.00
9.03% drop
Price Drop 17th Feb 2019
$97.07 $85.99
11.41% drop
Price Drop 23rd Jan 2019
$92.41 $85.99
6.95% drop
Price Drop 22nd Jan 2019
$97.56 $92.41
5.28% drop
Price Drop 11th Jan 2019
$91.75 $85.99
6.28% drop
Price Drop 5th Jan 2019
$99.99 $89.99
10% drop
Price Drop 30th Dec 2018
$168.77 $99.99
40.75% drop
Price Drop 17th Dec 2018
$180.00 $90.83
49.54% drop
Price Drop 13th Dec 2018
$177.94 $90.48
49.15% drop
Price Drop 10th Dec 2018
$178.99 $90.90
49.22% drop
Price Drop 5th Dec 2018
$180.00 $89.42
50.32% drop
Price Drop 2nd Dec 2018
$198.95 $95.88
51.81% drop
Price Drop 2nd Dec 2018
$95.88 $89.77
6.37% drop
Price Drop 27th Nov 2018
$90.45 $75.00
17.08% drop
Price Drop 21st Nov 2018
$81.08 $75.00
7.5% drop
Price Drop 30th Oct 2018
$94.51 $81.08
14.21% drop
Price Drop 15th Oct 2018
$94.52 $78.00
17.48% drop
Price Drop 13th Oct 2018
$94.20 $78.00
17.2% drop
Price Drop 8th Oct 2018
$94.33 $78.00
17.31% drop
Price Drop 7th Sep 2018
$96.09 $81.08
15.62% drop
Price Drop 24th Jul 2018
$118.62 $94.88
20.01% drop
Price Drop 28th Jun 2018
$95.51 $81.23
14.95% drop
Price Drop 4th Jun 2018
$95.81 $85.50
10.76% drop
Price Drop 25th Nov 2017
$116.87 $82.50
29.41% drop
Price Drop 19th Nov 2017
$129.99 $119.98
7.7% drop
Price Drop 14th Nov 2017
$140.69 $129.99
7.61% drop
Price Drop 6th Nov 2017
$127.19 $113.39
10.85% drop
Price Drop 22nd Oct 2017
$108.57 $95.50
12.04% drop
Price Drop 20th Oct 2017
$120.63 $108.57
10% drop
Price Drop 18th Oct 2017
$140.00 $120.63
13.84% drop
Price Drop 24th Aug 2017
$122.99 $99.99
18.7% drop
Price Drop 6th Jul 2017
$116.99 $99.99
14.53% drop
Price Drop 5th May 2017
$72.99 $60.00
17.8% drop
Price Drop 4th May 2017
$88.56 $72.99
17.58% drop
Price Drop 22nd Apr 2017
$88.74 $80.25
9.57% drop
Price Drop 9th Apr 2017
$99.97 $43.19
56.8% drop
Price Drop 5th Apr 2017
$99.97 $91.00
8.97% drop
Price Drop 5th Apr 2017
$91.00 $45.00
50.55% drop
Price Drop 2nd Apr 2017
$56.98 $38.99
31.57% drop
Price Drop 1st Apr 2017
$99.97 $56.98
43% drop
Price Drop 29th Mar 2017
$87.00 $69.95
19.6% drop
Price Drop 27th Mar 2017
$59.98 $44.99
24.99% drop
Price Drop 26th Mar 2017
$99.97 $59.98
40% drop
Price Drop 20th Mar 2017
$89.99 $77.07
14.36% drop
Price Drop 19th Mar 2017
$103.37 $89.99
12.94% drop
Price Drop 18th Mar 2017
$117.99 $103.37
12.39% drop
Price Drop 11th Mar 2017
$85.00 $80.00
5.88% drop
Price Drop 9th Mar 2017
$99.97 $85.00
14.97% drop
Price Drop 5th Mar 2017
$99.99 $68.00
31.99% drop
Price Drop 26th Feb 2017
$99.97 $92.90
7.07% drop
Price Drop 2nd Feb 2017
$99.97 $94.08
5.89% drop
Price Drop 29th Jan 2017
$99.97 $94.08
5.89% drop
Price Drop 25th Jan 2017
$124.99 $99.97
20.02% drop
Price Drop 10th Jan 2017
$129.99 $117.50
9.61% drop
Price Drop 19th Dec 2016
$124.99 $89.97
28.02% drop
Price Drop 7th Dec 2016
$89.97 $80.48
10.55% drop
Price Drop 2nd Dec 2016
$99.99 $89.97
10.02% drop
Price Drop 30th Nov 2016
$129.99 $99.99
23.08% drop
Price Drop 25th Nov 2016
$129.99 $99.99
23.08% drop
Price Drop 27th Jul 2016
$93.38 $80.14
14.18% drop
Price Drop 15th Jul 2016
$93.38 $84.12
9.92% drop
Price Drop 16th Jun 2016
$88.74 $55.00
38.02% drop
Price Drop 11th May 2016
$80.99 $74.87
7.56% drop
Price Drop 12th Apr 2016
$88.74 $83.00
6.47% drop
Price Drop 27th Mar 2016
$84.50 $52.58
37.78% drop
Price Drop 25th Mar 2016
$91.73 $84.50
7.88% drop
Price Drop 13th Mar 2016
$99.00 $91.67
7.4% drop
Price Drop 29th Feb 2016
$84.50 $74.99
11.25% drop
Price Drop 15th Feb 2016
$84.75 $80.00
5.6% drop
Price Drop 21st Jan 2016
$99.00 $89.99
9.1% drop
Price Drop 10th Jan 2016
$80.48 $72.95
9.36% drop
Price Drop 14th Dec 2015
$93.82 $79.99
14.74% drop
Price Drop 10th Nov 2015
$99.00 $88.80
10.3% drop
Price Drop 10th Oct 2015
$95.50 $80.00
16.23% drop
Price Drop 2nd Oct 2015
$97.59 $84.00
13.93% drop
Price Drop 25th Sep 2015
$98.99 $93.98
5.06% drop
Price Drop 31st Aug 2015
$94.04 $88.00
6.42% drop
Price Drop 22nd Jul 2015
$99.00 $88.00
11.11% drop
Price Drop 20th Jul 2015
$99.99 $65.00
34.99% drop
Price Drop 9th Jul 2015
$99.99 $89.10
10.89% drop
Price Drop 10th Jun 2015
$99.99 $92.89
7.1% drop
Price Drop 22nd Apr 2015
$98.94 $88.99
10.06% drop
Price Drop 8th Apr 2015
$98.94 $86.50
12.57% drop
Price Drop 28th Feb 2015
$159.99 $98.12
38.67% drop
Price Drop 2nd Feb 2015
$159.99 $135.15
15.53% drop
Price Drop 19th Jan 2015
$99.99 $67.69
32.3% drop
Price Drop 14th Jan 2015
$169.99 $99.99
41.18% drop
Price Drop 9th Jan 2015
$169.99 $99.99
41.18% drop
Price Drop 5th Jan 2015
$169.99 $99.99
41.18% drop
Price Drop 23rd Dec 2014
$99.99 $79.99
20% drop
Price Drop 16th Dec 2014
$159.99 $99.99
37.5% drop
Price Drop 10th Dec 2014
$89.99 $79.99
11.11% drop
Price Drop 23rd Nov 2014
$89.99 $69.00
23.32% drop
Price Drop 21st Nov 2014
$89.99 $67.34
25.17% drop
Price Drop 11th Oct 2014
$99.99 $92.14
7.85% drop
Price Drop 14th Aug 2014
$89.99 $80.97
10.02% drop
Price Drop 13th Aug 2014
$99.99 $89.99
10% drop

Product Information

Details

Product Name Brother XM2701 Lightweight Sewing Machine 27 Stitches | 27 Built-in Stitches, 1-Step Auto-Size Buttonhole, Needle Threader, Jam-Resistant Top Drop-in Bobbin
Store Product Code B00JBKVN8S
Store Name amazon.com
Brand Brother
Rating 9.2 / 10
Category Sewing Machines
Product Manufacturer Brother
Model Number XM2701S
Model Number XM2701S
Color White
Dimensions 15.3"D x 5.86"W x 12.01"H

Features

  • 27 Unique built-in stitches: The XM2701 includes 27 built-in stitches including decorative, blind hem, zigzag, and stretch stitches and an auto-size buttonhole
  • Automatic needle threader and drop-in top bobbin: This sewing machine includes an automatic needle threader that perfectly pushes the thread through the needle and a convenient, jam resistant drop-in top bobbin
  • Included accessories: The XM2701 comes with 6 sewing feet, 3-piece needle set, twin needle, 4 bobbins, manual and more
  • Versatile free arm: This free arm sewing machine is perfect for a wide range of everyday sewing projects, and users from beginners to advanced
  • At your side support: The XM2701 sewing machine comes with Brother At your side support offering free technical support via online, live chat or phone for the life of your machine
  • This product is intended for sale only in the US at 120 volts, and any other use or sale voids the warranty.

Images

×
Image of Brother XM2701 Lightweight Sewing Machine 27 Stitches | 27 Built-in Stitches, 1-Step Auto-Size Buttonhole, Needle Threader, Jam-Resistant Top Drop-in Bobbin
Image of Brother XM2701 Lightweight Sewing Machine 27 Stitches | 27 Built-in Stitches, 1-Step Auto-Size Buttonhole, Needle Threader, Jam-Resistant Top Drop-in Bobbin
Image of Brother XM2701 Lightweight Sewing Machine 27 Stitches | 27 Built-in Stitches, 1-Step Auto-Size Buttonhole, Needle Threader, Jam-Resistant Top Drop-in Bobbin
Image of Brother XM2701 Lightweight Sewing Machine 27 Stitches | 27 Built-in Stitches, 1-Step Auto-Size Buttonhole, Needle Threader, Jam-Resistant Top Drop-in Bobbin
Image of Brother XM2701 Lightweight Sewing Machine 27 Stitches | 27 Built-in Stitches, 1-Step Auto-Size Buttonhole, Needle Threader, Jam-Resistant Top Drop-in Bobbin
Image of Brother XM2701 Lightweight Sewing Machine 27 Stitches | 27 Built-in Stitches, 1-Step Auto-Size Buttonhole, Needle Threader, Jam-Resistant Top Drop-in Bobbin

Rating and Reviews

9.2 Based on 19026 reviews

Brother XM2701 Lightweight Sewing Machine 27 Stitches has 9.2 rating out of 10. This average rating is consist of 19026 individual ratings. You can rate this product at product review page.

* Predictions is created on based of past prices and trends, it does not guarantee that it will happen. These are just prediction for theoretical information only.