Willss Battery 3.7V Li-on 900mAh Backup Rechargable Battery Replacement For SJ4000/SJ5000/SJ6000 Outdoor Action Sports Camera Sj4000 genuine original lithium battery 3.7V-Li-ion Battery 900mAh 3.33W / h Same size, same performance, low-capacity battery replacement High-capacity, high-performance lithium batteries Usually we send your order within 1-2 days.Ship from china via Safe ePack Registered Airmail with tracking number, it takes 7~15works days! Good Service and no fee 1 Year Warranty(not including Shipping cost ) is our company policy.Import duties, taxes, and charges are not included. Money refundale and send back to us if you don't want it. We sell,We care!Buy With Confidence!