Features: Experience precise and reliable measurements with the USB Digital Power Tester, featuring high precise chip that ensures accurate current and voltages readings for all your USB devices. This portable USB detectors is with a compactly and lightweight build, making it easy to carry and perfect for both everyday use and travel needs. Suitable for enthusiasts, professionals, and everyday users, this device offers intuitively interfaces suitable for anyone look to monitors their USB devices performances. Use it in various scenario, from testing mobile phone charger to monitoring power consumption on USB disks, ensuring optimals device functionality at homes or on travel. With its robusts construction and overloads protections, this USB tester guarantees durability and safety, providing peace mind while you assess your electronic devices power metric. Specifications: Component:Metal+ABS Size:Approx.53x35x14mm/2.09x1.38x0.55inch 4Option Type; Working Ranges: Detecting Whether the Voltages of the Mobile Phone Charger Can Meet Standard of Dc5v with Current (0-2.5a) Working Ranges: U=3~7.5v I=0~2.5a Resolution: Voltages 10mv, Current 10ma Error: Voltages<±1%, Current<±2% Full Ranges Voltages Drop: 200mv (When Measuring Current) Working Temperature: 0-60℃ Package Includes: 1pc USB Power Tester note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.