The Penjamin is cart battery that is also a functional writing pen.

The Penjamin from Smyle Labs is a 510 threaded cart battery, that is doubles as a writing pen. The patented design of the Penjamin discretely hides a 0.5/1g 510 threaded cart in a pen shaped battery housing, and features a functioning writing pen at the tip. The Penjamin features a built-in rechargeable battery with Micro USB charging port, an adjustable voltage output with three power settings, preheat function, and a LED indicator light.

Product Specifications:

• Threaded 510 Connection
• Fits Most Threaded 0.5g and 1g Carts
• Variable Voltage
  
• Pre-Heat Mode
• Micro USB Charging