Get JUICED with our WULF PRO Battery! Battery: 400mAh, providing reliable power for long-lasting sessions. Voltage Range: Adjustable from 2.0V to 4.2V, allowing for customizable settings. OLED Screen: Displays battery level, puff count, and voltage level. Preheat Function: Extended 12-second preheat mode for smooth hits. Charging: USB-C charging port for modern and efficient charging.