Voopoo Drag 2 Mod Power range: 5 to 177watts. Ergonomic rounded corners compared to original Drag Mod. Weight: 158g (compared to original Drag mod which is 203g). Battery cells: takes 2 x 18650 (supports Balance Charge with different battery brands). Battery cells NOT included. Features the latest custom-made GENE.FIT Chip which precisely controls output power and temperature and includes numerous battery and chip protection features. The GENE.FIT Chip protects sub-ohm tanks from burnout. The GENE.FIT Chip Intelligently matches with tanks. Multiple battery protection functions. OLED screen. Lowest resistance: 0.05 ohms. TC Mode: SS316, Ni200, Ti, NC, TCR, CCR. Temperature control mode range: 100 - 315℃. Dimensions: 88mm x 51mm x 26.5mm. Materials: Zinc Aluminium alloy and Resin. Batteries not included, you can find 18650 batteries here (needs 2)