DC-DC USB 0.9V-5V Boost Module

Input voltage: 0.9V-5V DC

Output voltave: 5V (USB port)

Transfer efficiency:96%(max)

With working indicator light

 - with one AA battery power supply output current can up to 200~300mA, 

 - two AA batteries to the output current of 500~600mA

Size:34 x 15 x 7mm