350 Mah Variable Voltage Battery + USB Charger

350mAh Preheat Variable Voltage Battery & USB Charger. Standard 510 threading will fit nearly any unit on the market.This slim pen style battery sports a classic manual operation with convenient one button controls for fast and discreet sessions anywhere on the go. Includes three power options to help you hit that perfect sweet spot with a wide range of different concentrated oil types (2.8V, 3.3V, 4.0V)