1. 35W power continuous discharge,voltage; 3-21V, current; 0-3A. 2. Using 40 x 40 x 20MM copper roll fan, low noise, strong wind. 3. 40 x 40 x 10MM high quality radiator. , a strong cooling, to protect the life of the load. 4. Support for iphone5s / 6s, Android Mirco-usb, MINI USB, Type-c usb interfaces current test, By current size, you could distinguish charge data cable quality is good or bad . 5. USB tester function to facilitate the test charging voltage and current size. Note: if you need to test Qualcomm QC2.0/QC3.0 fast charging voltage (5V, 9V, 12V, 20V) and requires a combination of our QC2.0/QC3.0 trigger can test, can't directly read Qualcomm QC2.0/QC3.0 fast charging voltage (5V, 9V, 12V, 20V), thank you. Type: Household Battery Tester Name: 35w usb electronic load colour:Black+silver Material:PCB+metal size:100 x 48 x 30mm Package Contents: 1 x 35w usb electronic load(The PCB bottom board is red and green randomly, and the specified color cannot be ) 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.