10PCS PFM Control DC-DC Converter Module Step Up Boost 600MA USB Charger 0.9V-5V to 5V Power Supply Module Product name: step-up module, input voltage: 0.9-5VDC Output voltage: 5VDC; Input current: 600mATotal Size: 34 x 18 x 10mm / 1.3" x 0.63" x 0.4" (L*W*T); Material: Plastic, PCB, CopperUSB female, can direct power to USB interface device with USB female general-purpose PCB size: 25 (mm) x 18 (mm) ultra-small size, installed in various equipment Description: Input voltage: 0.9V~5V Output voltage: 5VOutput current: 500mA Card Size: 25*18mm1. input any DC voltage of 0.9V ~ 5V, output 5V DC voltage is stable, the input to the output current of 500 ~ 600MA with two AA batteries, a single AA batteries power supply output current 200 ~ 300MA or so for mobile phones camera, single chip digital products supply.2. with versatile female USB3, high conversion efficiency, up to 96%4. ultra-small size, installed in a variety of small equipment5. with working lightsPackage include:10PCS DC-DC Converter Step Up Boost Module Note: The data are all manual measurement, please allow 1-3cm error, due to the difference of light and display, there will be some color difference, depending on the physical item received.