Raw Garden™️ Branded Variable Voltage Battery Kit. 510 threaded / inhale activated. Battery Capacity: 350 mAh. Rechargeable with USB Adapter included with purchase. Temperature can be adjusted three different ways to optimize your flavor experience: 2.9V = Blue LED 3.1V = Green LED 3.3V = Red LED Press the button 5 times in quick succession to turn the battery on/off. Press and hold the button down while inhaling on the cartridge mouthpiece. Release the button to deactivate and stop inhaling.