Description: Multifunction: USB ammeter, bidirectional current, professional grade monitorFeatures: USB battery tester has USB A and Type C double male ports, suitable for detection and charging detection of chargers with different interfaces, plug and play, no adapter requiredAccurate Measurement: Current voltage tester equipped with 16-bit ADC chip, brings unparalleled high precision measurement to meet your requirementsReal Time Power Detection: Voltage current tester, 6.5A high current USB interface, direct charging power detection, Type C interface supports bidirectional current output5 Sets of Data Records: Voltmeter , worry power off storage, restart and uninterrupted measurement; built in battery capacity intelligent calculation, keep track of power at any time Specification: Material: Plastic Electronic ComponentsProduct Size: 73mmx36mmx12mm Package Includes: 1USB Battery Tester Note: Please allow slightly errors 1-2cm differences due to manual measurement.