It is the perfect troubleshooting multi-function tool. Measure power and energy consumption of any battery powered device. Easy to read LCD screen provides clear number readings, the wattmeter will continuously provide the real-time reading of amperes, volts, and after connection. High Precision: Measures 0-200 Amps, Resolution 0.01 Amps. Measures 0-60 volts, Resolution 0.01 volts. 0 - 6554W, resolution 0.1W. 0 - 65Ah, resolution 0.001Ah. 0 - 6554Wh, resolution 0.1Wh. The device can calculate the voltage, current, power, discharge amount and discharge time of the aircraft, and calculate the force effect of the multi-axis aircraft. Specification: Operates from 4.8-60V (0V with optional auxiliary battery) Backlit LCD Model: 16x2Product Test Range: 0-200 A, resolution 0.01A 0-60 V, resolution 0.01V 0-6554 W, resolution 0.1W 0-65 Ah, resolution 0.001Ah 0-6554 Wh, resolution 0.01Wh Colour:black Material:plastic Package Contents: 1 * RC Car Battery Tester 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.