Permanent Marker Battery - Smyle Labs

The office supply aisle goes undercover again—the Smyle Labs Permanent Marker Battery disguises a 510 cartridge inside a life-sized Sharpie-style marker that's indistinguishable from the real thing in a desk cup, tool belt, or backpack pocket. The cap removes to reveal the mouthpiece and concealed cart, and the marker body houses the battery, button, and USB-C port with professional-grade fit and finish. Unlike the Penjamin, the Permanent Marker doesn't write—it trades that feature for a thicker body that accommodates wider cartridges more easily, solving a compatibility complaint that some Penjamin users have with larger-diameter carts. For retail environments where the Penjamin is already selling well, the Permanent Marker provides a second disguise option from the same brand that diversifies the display without competing directly. The industrial-tool aesthetic also appeals to a more masculine customer segment than the pen's office-professional vibe.