The tester uses an external 16-bit ADC, PD protocol physical chip for accurate measurements of your USB devices power supply or power consumption. It also features a TYPE-C interface and a 2.0-inch full-color, ultra-wide viewing angle TFT LCD display for easy reading. versatile device that functions as a voltmeter, ammeter, and fast charging detector with practicality and precision. This highly-reliable -FNB58 USB Tester is a must-have gadget for enthusiasts. Not just limited to USB interface products, it can also measure the charging power of mobile phones and the input and output of mobile power supplies. Plus the ability to test the fast charging protocol of chargers. Monitor voltage range: 4~28V Monitor current range: 0~7A Monitor power range: 0~120W Load equivalent internal resistance range: 0~9999.9 D+/D- voltage range: 0~3.3V Equipment temperature display: / Capacity measurement: 0~9999.99Ah Energy used display: 0~9999.99Wh Cable resistance measurement: 0~9999.9 Equipment running time display: 99d23h59min59s Record time display: 99d23h59min59s Experience safe and efficient gadget use with -FNB58 USB Tester. Material: plastic + metal Color as shown Package Contents: 1 x USB Tester Only the above package content, other products are not included. Note: Light reflection 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.