Smyle Labs Permanent Marker Variable Voltage 510 Cart Battery

The Smyle Labs Permanent Marker Battery is the ultimate low-profile 510 device, designed to look and function just like a real permanent marker. Created for users who prioritize privacy, this clever battery hides your cartridge inside the marker body while still delivering smooth, reliable performance and adjustable voltage control. It even writes with ink, completing the disguise and making it effortless to carry in your bag, desk drawer, or pocket.