Fangrui Product Details 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*2*1.7cm Package Contents: 1 X Lm317 Dc-dc 1.5a 1.2-37v Adjustable Power Board Only The Above Package Content, Other Products Are Not Included. Note: Light Shooting 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.