The DOVPO VEE VV Box Mod is a high-powered performance device powered by two high amp 18650 batteries (sold separately). Regulated voltage mode with variable voltage from 1.0V to 8.0V. Features a high-definition digital display with pertinent vaping data, including real-time output voltage and resistance. Ergonomic design with anti-slip body material inlaid for comfort and accident-prevention. Side fire button with 10 millisecond firing chipset. LED battery life indicator. Multiple ventilation holes for heat dissipation and short circuit, over-heating, and low-voltage protection suites. High-grade zinc alloy.