Vista Edge is powered by a premium-grade battery and features a uniquely designed, sweeping collar that not only provides the necessary protection for your cartridge but essential visibility to what’s inside. Also available in Bahama, Very Peri, and Slate. Features a protected, cartridge drop-in design Fits most 510 thread cartridges (included cartridge is non-functional and for merchandising purposes only) Powered by a high-quality 320mAh lithium-ion rechargeable battery core 3-LEDs indicate battery life and power settings Four (4) power/voltage settings (2.4V, 2.8V, 3.2V, 3.6V) USB magnetic charging port + cable Compatible with Base Charger and Rover Cases Dimensions: 4.6"L x 0.53"D Weight: 30g Six (6) month limited warranty This model ?does not? feature a removable transition module