Inspo Dual doubles the enjoyment of the fan-favorite Inspo line. With Inspo Dual, you can use up to 2 cartridges at the same time (up to 2 grams). Inspo Dual is available in Noir Black, Lilac Purple, and Steel Blue. Specs: Battery mAh: 650 mAh Voltage Range: 1.8v, 2.4v, 2.8v, 3.4v, 3.8v Battery Charge Time: 90 min. Atomizer Capacity: 2 gram (2 at once) What's in the box: Inspo Dual Vaporizer, Sand Quartz Atomizer (1), User Manual