Specifications:Output Current: 1.5A (minimum), 2.2A (typical value)Input-output voltage difference (VI-VO): 40Vdc (max)Adjustable output voltage range: 1.2 - 37VCurrent output: 1.5AVoltage Input: 4.2 - 40 VOperating temperature: 0 Celsius - 125 CelsiusWorking temperature: -55 Celsius to + 150 CelsiusCharacteristic frequency: 100 (MHz)Output mode: VOUT output positive, GND output negativeApplicationsMobile phone, MP3, MP4, PSP and many other charging equipmentcolour: BlueMaterial: PCsize: 3.5 x 2 x 1.7cmPackage Contents:4 x LM317 DC-DC 1.5A 1.2-37V adjustable power boardOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.