The Rechargeable Li-Ion Battery from SJCAM is designed for use with the M20 series. This lightweight battery is about the size of a matchbook.
Features
-This battery compatible with M20 4K, Air
-Lithium ion 900mah (3.3wh) 3.8v battery
-Extra power for your digital video camera / camcorder
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Warranty Period
1 Week factory defect replacement (should be in pristine condition).
If you found the item you received is defective or any problem in using, please do not hesitate to contact us first and we will be gladly to attend on your concern. Thank you very much!