Capacity: 0.5ml/1.0ml 2.Type: Rechargeble 3.Material: Ceramic&Pyrex Glass 4.Color: White/Black The 0.5ml size is 121.8mm*10.5mm. The 1.0ml size is 10.5mm. With Bottom micro USB Charging. The product material is Full Ceramic, you can choose the capacity according to your preference. It's a top airflow and top filling cartridge, more convenient for use. Top spiral design, rotatable and detachable structure. This one has a charging port on the bottom, and the other one has an indicator light on the bottom..syi