Applicable type:4pcs 5 batteries,1.5V AA batteries×4pcs,4pcs 4aa battery box in the package
Function: AA battery holder with USB port and battery holder switch function with ON/OFF switch
Material: aa battery holder with USB port is made of toughness material, high strength, good toughness, not easy to crack.
4 AA battery pack with USB port (without USB cable),Output voltage is about 6V (without voltage stabilization function)
Dual battery box easy installation: The battery is held in place by a stainless steel spring. It is very easy to install and replace the battery, not easy to damage other parts.