1Multifunctional Tester: This precise power meter is used to evaluate RC battery charging efficiency, measuring current and energy consumption for all battery-powered devices. 2Precision Calculation: The meter predicts the flight time of the model aircraft and selects the best propeller or the most efficient motor. 3Safety Guarantee: Check wiring and contact losses to ensure that the peak current is safe for the motor, ESC, and battery, as well as wiring and contacts. 4Backlight Function: With backlight function, long press the button for 5 seconds to turn on and off, backlight settings can be saved when the power is turned off. 5Wide Application: The multifunctional high-precision meter is equipped with a digital LCD screen, easy to read data, suitable for RC remote control car, boat, aircraft battery. We are well aware of how important customer service is to our customers, therefore we strive to provide the most thoughtful and prompt service. From ordering to delivery and handling customer service issues, we follow the entire process to ensure that your rights and interests are protected in the best possible way.