Rechargeable replacement battery; long time working without break because of the low power; perfect backup of your original batteries High capacity;
3.7V voltage ;Li-ion type;1100mAh battery capacity Longer battery life;
about 3-4 hours of charging available for 12 hours or more easy for packing;
68g weight and easy to carry for outdoor activities Customized design;
suitable only for Retevis RT21 two way radios Excellent for use in police; military; nightclubs; bars; paintball; security; restaurants; hotels; bouncer; warehouses and outdoors.