Product features: 1.6.5A large current, maximum resolution 0.00001, real-time monitoring of subtle changes in voltage, current and power during charging 2.6 Digits display high precision, supporting multiple fast charging protocols 3. CNC metal shell design, light and delicate touch, with 1.77-inch high-definition display screen, multiple displays on one screen, and clear data at a glance 4. The mainstream fast charging protocol can detect deception 5. Equipped with gravity sensing function, 360-degree rollover is comprehensive and supports closing/opening 6.10 Group data intelligent recording 7. Multi-USB port compatibility Product parameters: Monitoring voltage: 4~24V, resolution: 0.00001V, accuracy: (0.2%+2) Monitoring current: 0~6.5A, resolution: 0.00001A, accuracy: (0.5%+2) Monitoring power: 0~156W, resolution: 0.00001W, accuracy: (0.5%+2) Load equivalent internal resistance: 0~9999.9 , resolution: 0.0001 , accuracy: (0.5%+2) D+/D-voltage: 0~3.3V, resolution: 0.001 V, accuracy: (1.0%+2) Equipment temperature: , resolution: 1 , accuracy: (1.2%+3), , resolution: 1 , accuracy: (1.2%+4) Capacity: 0~9999.99Ah, resolution: 0.00001Ah Power consumption: 0~9999.99Wh, resolution: 0.00001Wh Cable internal resistance: 0~9999.9 , resolution: 0.0001 Running time: 99 days, 23 hours, 59 minutes, 59 seconds, resolution: 1 second Recording time: 999 hours, 59 minutes, 59 seconds, resolution: 1 second Package list: FNB48P BT version USB charging tester * 1 (Blue) or FNB48P No Bluetooth ordinary USB charging tester * 1(Silver)