The M3B Plus is a versatile vape battery compatible with various cartridge sizes, featuring three voltage settings (2.8/3.2/3.6V) easily selectable with a triple tap and indicated by LED lights. It includes a preheat function to prevent clogs, activated by a double tap for a 10-second warm-up. Designed for safety, the device can be turned on or off with five taps and activated with a single press and hold, preventing accidental use.