Features: Accurately measure voltages, current, power, and battery capacity in real time with high precisions sensorings, delivering professional USB tester performances for electronics diagnostics. Universal USB compatibility eliminates adapters needs, featuring ABS plastic housing and PCBs circuitry to daily use as a portable battery capacity tester. for enthusiasts, frequent travel, and device heavy users requiring voltages current meter analysis for smartphones, powerbanks, and tablets. Optimize charging safety during home use, travel, or workplaces scenarios by auto detecting device specific power parameters through this pocket sized diagnostic tool. Engineered with impact resistant materials and smartests recognition technology, it safeguards expensive electronics from overcharging while providing long durability as essential USB tester. Specifications: Materials: ABS plastic + PCBs + metal voltages ranges: 3V-9V Current ranges: 0-3A Capacity ranges: 0-99999mAh Size: 7.3x2.3x1.35cm Package Includes: 1PC Voltages Meter note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.