brand new and high quality Features: Suitable for measuring voltage, current, power, capacity, temperature, and timing in real for time. Secure, reliable and accurate in use. Power-off storage function lead to storaging capacity and energy data when the mobile power is cut off. Widely used for cell phone chargers, power banks, etc,. Easy to carry and handle. Alluminum alloy connector is to avoid oxidation and rust. USB Current Voltage Test Meter only, other accessories demo in the picture is not included. How to use: 1. Click the button and view 1-9 sets of charging data. 2. Long press the button for 3 seconds to remove a set of charging data. 3. Double-click the button and rotate the screen to view. Specification: Display Type: Digital Only Voltage: 4V-30V Current: 0-5.1A Capacity: 0-999999mAh Power: 0-150W Electrical Energy: 0-999.9WH Timing: 0-99 hours Inner Temperature: 0-80 C Divide Into Groups: 0-9 group Charging Resistance: 0-999.9 Positive Voltage:0-10V Negative Voltage:0-10V Type: USB Current Voltage Test Meter Optional Style/Color: Black, White Size: 56.6 x 24.7 x 11.2mm(2.23 x 0.97 x 0.44in) Quantity: 1 Pc Note: 1. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1Pc x USB Current Voltage Test Meter