When they’re not collaborating, they’re innovating. Fire up RIFF’s iconic duos with this 510 Battery. RIFF 510 Battery Kit Features and Includes: - 510 threading that pairs with all 510 carts (*Cartridge Sold Separately*) - 350 mAh Battery - USB Charger included (USB-C ports not recommended to charge unit) - 3 heat adjustment with three quick clicks of the button *White = 2.8V *Blue = 3.2V *Red = 3.6V - On/Off feature with five quick clicks of the button. - 10 second pre-heat feature with two quick clicks of the button, one click to turn it off before the 10 seconds runs out. -10 second safety feature prevents overheating of the unit Dimensions: Length: 80mm Diameter: 11mm Weight: 20g *Avoid laying unit horizontally. Also avoid taking strong hauls as that can cause the cartridge to become clogged with distillate oil. To relieve clog set the battery button to high (red) and hold it down for the full ten seconds. Gently begin to puff on the cartridge while holding down the button until the unit becomes free of the clog.