Penjamin | Secret Cart Battery

Are the incognito cartridge batteries just not secret enough? Smyle Labs has you covered with their Penjamin line. Featuring a Car Key, Permanent Marker, and Writing Pen, these are sure to keep your cartridge secret from anyone. High-performance 510 cartridge battery 3 adjustable temperature settings Preheat function for best performance Includes Charging Cable Pen compatible with .5g and 1g cartridges Marker & Car Key compatible with cartridges .5g-4g