Specifications: Output Current: 1.5A (minimum), 2.2A (typical value) Input-output voltage difference (VI-VO): 40Vdc (max) Adjustable output voltage range: 1.2 - 37V Current output: 1.5A Voltage Input: 4.2 - 40 V Operating temperature: 0 Celsius - 125 Celsius Working temperature: -55 Celsius to + 150 Celsius Characteristic frequency: 100 (MHz) Output mode: VOUT output positive, GND output negative Applications Mobile phone, MP3, MP4, PSP and many other charging equipment colour: Blue Material: PC size: 3.5 x 2 x 1.7cm Package Contents: 4 x LM317 DC-DC 1.5A 1.2-37V adjustable power board Only 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.