This tool is an multifunction protocol capacity test tool, it integrated USB-A, Micro-USB, type-C interface, with 1.77 inch display screen, using external 16-bit ADC, PD protocol physical chip, which can real-time monitoring of the voltage, current, power, capacity, recharging protocol, curve waveform and so on, come on and try it, this type with the BT function, it will not let you down. Features: Five-bit or six-bit display can be switched by one button , with the maximum resolution of 0.00001, which can real time monitoring of the subtle changes in voltage, current and power during recharging. This product uses USB3.0 interface, 9 pin design, downward compatible with USB2.0,+ times the transmission rate of USB2.0.There is no need to use the primary data cable, it can also directly test the recharger agreement of some mobilephones. It is in small size, so you can take it with you to anywhere you want to use it, or you can take it and share it with your friends. This product can record 10 sets of measurement data, you can use the data you get to calculate the capacity of battery. This product directly add the calculate formula on this product, the outcomemultiply 1000 to get the capacity of battery. This product support read the data of E-Marker and DASH cable, and the chips of e-marker and DASH cables can be easily read after connecting the data lines. This product support screen flip function, through the gravity-induction, the screen can be free to flip, you can also turn off gravity-direction recognition and flip the screen by long pressing the middle key. This product uses differential pressure method to measure cable resistance. It is used with constant current load to easily detect cable resistance. This type with the BT function, you can connect this tool with your mobilephone to use, you can changing the language from Simplified Chinese, Traditional Chinese, English, Russian, Chinese, Japanese, Portuguese, French, Spanish, Germanaccordingto your like, then you can check the data and using it through your mobilephone. Specifications: Material: ABS Monitor voltage: 4~24V Monitor voltage resolution: 0.00001V Monitor voltage accuracy: 0.2%+2 Monitor current: 0~6.5A Monitor current resolution: 0.00001A Monitor current accuracy: 0.5%+2 Monitor power: 0~156W Monitor current resolution: 0.00001W Monitor current accuracy: 0.5%+2 Load equivalent international resistance: 0~9999.9 Load equivalent international resistance resolution: 0.0001 Load equivalent international resistance accuracy: 0.5%+2 Capacity: 0~9999.99Ah Energy used: 0~9999.99Wh Cable resistance: 0~9999.99 D+/D- voltage: 0~3.3V D+/D- voltage resolution: 0.001V D+/D- voltage accuracy: 1.0%+2 Equipment temperature: / Package size: 91 * 63 * 19mm / 3.6 * 2.5 * 0.7in Package weight: 55g / 1.9ounce Note: This APP only supports Android 5. 1 or above, BT 4.0 or above, and does not support IOS system temporarily. Since the device uses a BLE BT module, So you cannot connect to FNB48 through system settings, you need to search and connect in the APP. Packing list: 1 * Protocol Capacity Test Tool