The HoneyStick DUO is a buttonless, auto-draw dual 510 cart battery that lets you vape one or two cartridges simultaneously — just inhale and go. Concealed design with selector switch and USB-C charging. Dual Cartridge Vaping: Load 1 or 2 carts and fire them individually or simultaneously 3-Position Selector Switch: Left cart, right cart, or both at once Buttonless Auto-Draw: Inhale-activated — no buttons, no learning curve Concealed Design: Carts hidden inside with front-facing oil view window Universal 510 Thread: Fits carts up to 10.7mm diameter x 70mm tall USB-C Rechargeable: High-capacity battery with fast charging Compact & Discreet: Pocket-friendly matte black shell