DC-DC Converter Step Up Boost Module 1-5V to 5V 500mA USB Charger For MP3 Phone Brand new and high quality. Input voltage: 1V~5V. Output voltage: 5V. Output Current: 500mA. Input any DC voltage of 1V ~ 5V, output 5V DC voltage is stable, the input to the output current of 500 ~ 600MA with two AA batteries, a single AA battery power supply output current 200ma about for mobile phones camera, single-chip, digital products supply. With USB female versatile. High conversion efficiency,up to 96%. Ultra-small size, installed in a variety of small equipment. With working lights. Size: 1.8cm x 3.2cm - 0.7inch x 1.3inch.