Product information: Interface: USB interface Print media: thermal paper Dimensions: 11.00*8.00*3.50CM Power supply: USB Net weight: 250 Support system: Bluetooth 4.0 Network printing: support Automatic two-sided printing: not supported Purpose: text printing Model: Domestic Chinese version (including one roll of printing paper), Domestic English version (including one roll of printing paper), Cross-New Chinese version (including one roll of printing paper), Cross-border English version (including one roll of printing paper), Domestic New APP version blue, domestic new APP version pink Resolution: 200DPI Battery: 1000MAH Style 1: Ten year white thermal sensitive photo paper 57 * 25mm Style 2: Three rolls of ten-year color thermal sensitive photo paper (three rolls of yellow blue powder) 57 * 25mm Style 3: Adhesive Color Thermal Paper 5-Color Pack (with Adhesive) 57 * 25mm Packing list: Wrong question machine X1