Type: 4 inches Thermal printer Use: Bar code Printer Interface Type: USB/Bluetooth Max Paper Size: 100MM Print Speed: 200mm/s(Max.) Max. Resolution:203dpi Software development kit (SDK):Yes Battery: Built in power supply Printing Method: Thermal Dimensions (WxDxH):180*240*170mm Color: Grey Paper type:Thermal paper ✅no ink,no ribbon ✅fast printing and shipping Factory direct sales and cost-effectiveness✅ High-end technology✅ No ink (X replacement consumables)✅ Automatic paper return(save the first sheet of paper)✅ High-speed printing(180MM/seconds)(5K Sheet print in 1 hours)✅ Durable and anti-static (print life up to 30km)✅ No paper jams✅ Save time✅ Clear and Easy to use✅ Use for Airwaybills, QR code, label and so on✅ After-sales service, providing installation and teaching services✅ 6-month ✅