Features Real-time Data Detection: Instantly monitor voltage, current, power, and other data with a clear, easy-to-read display, providing real-time insights into your USB devices. High Brightness IPS Display: Features a high brightness, 160° wide viewing angle, IPS full-color display for vivid and colorful visuals, ensuring a long working life for continuous usage. Precision Algorithm: Utilizes a professional sampling circuit and unique precision algorithm for accurate and stable measurements at both hardware and software levels, guaranteeing reliable performance. USB 3.0 Compatibility: Compatible with USB 3.0 and USB 2.0 interfaces, supporting high current tests, as well as mobile hard disk and USB disk tests for enhanced versatility. PC Material: Constructed with high-quality PC material, the shell offers high strength and good transparency, ensuring long-lasting durability and a professional look. 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. Package List