SirEEL (Blue) 380mAh w/ Preheat Variable Voltage Battery & 510 Thread USB Charger

ompatible with standard 510 threading, this slim pen-style battery pairs effortlessly with nearly any unit on the market. Designed for convenience, it features a classic single-button operation for fast, discreet use on the go. Users can fine-tune their experience with three variable voltage settings, 2.7V (White), 3.1V (Blue), and 3.6V (Red) to accommodate a wide range of concentrated oil types. A built-in preheat function ensures smooth, consistent performance.