Dc-dc Step Up Module Board

We are trading and distributing of DC-DC Step Up Module Board to our patrons. DC-DC Step-Up Module - (0.9V~5V) to 5V 600MA USB (Portable Charger). Our another great Step-up Module, input from 0.9-5V, output 5V for many digital devices, so this is really a great module for designing a portable charger.
Specification:
a c With input any DC voltage of 0.9V ~ 5V, it can output 5V DC voltage stably, with two AA batteries it can output current of 500 ~ 600MA, a single AA battery power supply can output 200ma current supply, great for mobile phones camera, single-chip, digital products supply.
a c with USB female connector, versatile function
a c high conversion efficiency, up to 96%
a c ultra-small size, installed in a variety of small equipment
a c with working status lights