Welcome to VVHOOY Store! Note:This item comes with 3 pcs 1050mah battery and one dual charger with a small easy to carry package. 1050mah battery:it will be last longer than stock 900mAh.its battery style is round,it can fit with both original square battery and original round battery. Get 3 extra batteris, do not need to worry about running out of juice for the camera on the road Dual charger: allows for 2 batteries being charged at the same time, which is good time saver. Excellent must have if you constantly on the move Battery: Size: 1.31 x 1.2 x 0.9 inches (LxWxH) Compatibility: 1050mAh Backup Rechargable Li-ion Battery Battery Voltage: DC 4.2V Battery Capacity: 1050mAh Dual USB Charger :allow charger with Mini USB , also micro usb cable. The VVHOOY Rechargeable Action Camera Battery and Charger Kit includes: ◆3 X 1050 batteries ◆1 X Dual USB Dual Charger ◆1 X USB Cable Work with Sports Action Camera ,Such as: AKASO DBPOWER Lightdow Vikeepro Vtin Canany Gear pro APEMAN Wimius Cymas ABLEGRID GT ROAD 4K Campark SOOCOO ELE Cam EKEN Gizcam Pictek dOvOb ODRVM Aurosports Legzone TecTecTec exuby Anbero Aokon ActionSavvy Binwo SereneLife Chinaface AEDILYS iCOOLB JUNINGLevin Axess CCbetter AKEDRE Yuntab LADEY ICONNTECHS IT Thanks for shopping at VVHOOY Store, If something question with this product or your order,please feel free to contact us at the first time,our team member will follow up with your question and slove it ASAP!!!