Brand new and high quality.It can be very easy to find digital device charging problem.Compact and easy to carry, no additional supply, plug and play.It can easily measure the output voltage of the USB port and the device operating current or load voltage.Detect any USB charger such as PC USB, home charger, car charger.Suitable for factories, labs and personal product.Specification:Internal resistance: 0-999.99: 0-150WVoltage: DC4-30VCurrent: 0-5ACounting time: 0-99 hoursDelay time: 0-24 hoursTest content: USB voltage, current, , capacity, electric quantity, timing and etc.Electric Quantity: 0-999.9WHDimensions: 75x25x13mm/2.95 x 0.98 x 0.51 inch(approx)Material: plasticcolour: WhitePackage Contents:1 x Usb TesterOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.