Compatible with: 510 Tanks Variable Voltage: Blue - 3.2V Purple - 3.6V White - 3.9V Battery: Built-in 400mAh Size: 41mm x 24mm x 63mm Charging: Type-C Capacity: Up to 2g Cartridges Display: LED Indicator Airflow: Fixed Pre-Heat Function: Yes, Two Click Magnetic Cover Includes: 1 x Lookah Turtle Device