RuiDeng AT34 USB 3.0 Color LCD Voltmeter Ammeter Current Meter Multimeter Charger USB Tester Features: Real-time detection of the changing state, voltage, current, power and other data will be clear at a glance. High brightness, 160° wide viewing angle, IPS full-color display and colorful, long working life. Adopts the professional instrument to sample circuit and use the unique precision algorithm, which ensures the accuracy and stability of the product at the hardware and software level. The USB 3.0 interface is compatible with USB 2.0, which not only supports high current test, and also supports the test of mobile hard disk and USB disk of USB 3.0 interface. The shell  is made of PC material, high strength, good transparency. Specification: Brand: RuiDeng Model: AT34 Display screen: 0.96" color IPS display Voltage measurement range: 3.70-30.00V Voltage measurement resolution: 0.01V Current measurement range: 0-4.000A Current measurement resolution: 0.001A Capacity accumulation range: 0-99999mAh Energy accumulation range: 0-99999mWh-999.99Wh Voltage measurement accuracy: ±(0.8% +4 digits, under 25℃） Load impedance range: 1-9999.9Ω Power measurement range: 0-120W Temperature range:0-80℃ / 32-176℉ Temperature measurement error: ±3℃ / ±6℉ Working temperature range: 0-45℃ / 32-113℉ Refresh rate:2Hz Dimensions: Approx. 64*22*12mm/2.5*0.9*0.5inch Weight: Approx. 27g Package Included: 1 x USB Tester Note: 1. Please allow small size error due to manual measurement. Thanks for your understanding. 2. Only a USB tester, no other stuff included.