APP: Androidd downloads "Fun print" in Google Market IOS download "Fun print" in the application market Note: To connect the printer to the mobile phone, you must first turn on Bluetooth and locate. Dot Matrix Printer Type: GM rolls dot matrix printer Power supply: Built-in 1000mAh lithium battery Charging port: 5V-MicroUSB Resolution: 203dpi Printing method: Thermal / no ink printing Development method: Black and White Consumable specifications: 57 * 30 mm Networking mode: Bluetooth BLE4.0 Print media: Thermal paper Support system: IOS, Android Print format: 57 mm Internal Memory: None Voltage: 220-240V(10%) Print Speed: 20ppm Double-sided Printing: No Supports Network Printing: Wireless Paper Feed Mode: Roll Feed Uses: label printing, wrong title printing, photo printing, picture book DIY printing Supported languages: Chinese, English, Korean, Japanese, Spanish, Portuguese, Russian, German, Italian, Thai, Traditional Chinese, and languages will continue to be added in the future. * The sticker printing paper is sent by random, white or blue-white as following photo, the printing side is in white, and the bottom color has little difference, one is in white, one is in blue, but it doesn't affect printing.