Specifications: Timing the max time:999 hours 59minutes 59 seconds;Resolution accuracy:1s Timing testing alarm setting:count down 24 hours Arbitrary setting value Small current standby alarm threshold parameter and timing: 0.5W begin timing 4~30V voltage provides electricity for testing system Refresh time:>500mS/times;> 500mS/times Testing speed rate:about 0.5 times/s Over voltage over current setting alarm method:display warming interface alrm users Over voltage warning setting range:1~200V Low voltage warning setting range:0~190V Over current warming setting range:0.2~100A Maximum power: 180W (more than 180W will send a quick alarm to cut off the output current and protect the product) Display screen type:micro power consumption crystal module LCM black font green backlight Chinese English display screen Working temperature:-10~+60℃; -10~+60℃ Working humidity:10~80℃ (no condensation);10~80℃(no doubt) Working gas pressure:80~106kPa - When the power is > 0.5W, the time will be calculated. Size:15.6 x 13 x 9.6cm/6.1 x 5.1 x 3.8inch Weight:700g Operation method: Keystrokes using method and the capacity, power,time reset Settings: 1) Reset button long-press all data (mAh,Wh,00:00:00) 2) Quickly button twice - capacity Reset (mAh) 3) Quickly button three - power reset (Wh) 4) Quickly button four - time reset (00:00:00) 5) Quickly button five - Set up automatic standby and Discharge the countdown to remind regularly 6)When no load output no-load,quick seven keys,and for the current zero to zero in the current environment temperature for accurate calibration,so more can do more accurate measurement in small current. Package Included: 1 x 180W USB Mobile Power Tester 1 x (US Plug) 2 x clip cable