**Revised Description:** **Fast Charging & Power-Off Storage:** This PD3.1 USB-C tester supports fast charging protocols like PD2.0, PD3.0, QC2.0, QC3.0, SCP, PE, DASH, VOOC, and SuperVOOC. It measures voltage and current, displaying data on-screen. The power-off storage function saves capacity and energy data for later review. **Auto-Rotating Screen:** Features a 0.78" high-definition display (color + B/W) with 360�� rotation and lock screen for easy reading. Shows voltage, current, power, capacity, energy, time, max values, current direction, and CPU temperature. **Type-C Input/Output:** Uses Type-C ports for compatibility with most charging devices. Supports bidirectional current testing for accurate speed measurement. **High Performance:** Max current 12A, voltage 4V-30V, power 0-600W. Ideal for various electronic devices. **Energy-Saving Design:** Auto screen-off with zero power consumption (<0.15W) when inactive, extending lifespan. **ESP32/ESP8266 Features:** Adjustable clock (80-240 MHz), low sleep current (<5��A), Bluetooth/Wi-Fi support. **Testing Range:** Works with PD2.0, PD3.0, PD3.1, QC2.0, QC3.0, SCPAFC, PE, DASH, VOOC, SuperVOOC, etc. **Display Options:** Switch between color and white fonts (hold side button for 2 sec). **Material:** Metal **Color:** Gold **Package Includes:** 1 x Meter *Note: Slight color variations may occur due to lighting/screen differences. Measurement tolerance: ��1-3cm.*