Specifications------- Battery Level and Temperature Display: Features an LED display for real-time monitoring of battery status and temperature settings, ensuring optimal performance. Battery Capacity: Equipped with a 650mAh battery, providing reliable, long-lasting power for extended vaping sessions. Charging Interface: Includes a USB-C port for fast and efficient charging, compatible with the latest devices and charging standards. Voltage: 2.8V , 3.4V and 3.8V -------------------------------------- INSTRUCTIONS: TURN ON/OFF : Press the Button 5 times to switch on or off. The indicator light will remain on for one second to indicated the power on or power off state. Preheat: Press 2 times with 1.5 seconds or inhale 2 time continuously to preheat. It preheats to 1.8v for 15 seconds. Rainbow flashing lights during the preheat time. Voltage Change: Click the button or inhale 3 times within 1.5 seconds to change the voltage settings.