Support USB Interfaces Product Name thermal printer Printing method thermal dot line printing Resolution 203dpi, 8dots/mm Working Size 12.4×8×4.7cm Packing Size 19×12×8cm Weight 0.55kg Paper Thickness 0.06-0.08mm Paper Width 57±0.5mm Paper Diameter 40mm (max) Loading Easy loading mechanism Interface Bluetooth and USB High speed High printing speed up to 90mm/s Main Composition This printer is made of polystyrene, durable and enviromentally. High performance thermal printer head Offer high definition printing, no need to ink or ribbon. Thermal print paper Drop in paper loading, max paper roller diameter reaches to 57±0.5mm Durable battery 1200mAh large capacity removable lithium-ion battery, and it can work up to 3 days.