Battery capacity: 500mAh Dimensions: 57H x 42.4W x 20D (mm)/2.24H x 1.67W x 0.79D (in) 15-second stable temp heating Digital display screen 15-second preheat 3 voltage settings (2.4V/2.8V/3.2V) Unobstructed oil view window Semi-transparent, compact body Compatible with 510 carts up to 14mm in diameter Inhale activated USB-C charging