Feature: 1. Multifunctional: This thermal Bluetooth printer supports 5 sizes and 2 paper types, supporting 2.24 inches (57 mm), 3.15 inches (80 mm), 4.41 inches (112 mm), A4 and 8.5 inches x 11 inches, which is very practical. 2. Built In 2000mAh Battery: This mini inkless printer has a built in 2000mAh rechargeable battery, about 1.5 hours fully charged, continuous printing of 90 sheets of A4 thermal paper, and shut down automatically without using it for 30min, standby time up to 30 days. 3. Compact And Portable: This portable printer is small in size and light in weight, it can easily fit into your laptop bag or backpack, and print anywhere via wireless bluetooth connection. It uses advanced thermal technology that allows you to print any content at low cost with a small printer, saving you more cost and time than traditional inkjet or laser printers. 4. Good Compatibility: This thermal printer is compatible with for iOS and for Android phones (via Bluetooth), connect to Bluetooth, download the for iprint APP, print anytime, anywhere, with a resolution of 200dpi, never worry about blurred prints, suitable for offices, schools, business trips and home use. 5. Wide Application: This portable wireless printer can print receipts, contracts, photos, pictures, journals, greeting cards, study notes, lists, labels, long banners, play coloring, card recognition, learn to learn or other games at home, office, school, customers, students, etc. Specification: Item Type: Thermal Printer Material: ABS Connectivity: Bluetooth 4.0 or Above Supported Systems: For iprint APP supports for Android, for IOS systems (not compatible with computers) Printing Resolution: 200dpi Battery Capacity: 1 x 2000mAh Rechargeable Lithium Battery (Included) Auto Power Off: 30min Charging Time: Approximately 1.5H Charging Interface: Type C Continuous Printing Battery Life: 90 Sheets A4 Thermal Paper Printing Speed: 10mm/s Supported Paper Width Specifications: 2.24 inches (57mm), 3.15 inches (80mm), 4.41 inches (112mm), A4 and 8.5 x 11 inches of US letter paper, supports roll paper, foldable paper (one roll of roll thermal paper included).. Package List: 1 x Thermal Printer 1 x USB Cable 1 x Manual 1 Roll x Thermal Paper (built in the printer) Note: 1. If the device's Bluetooth cannot be found, you can try the following steps to search again: a. Restart the printer to ensure it is not connected to other devices. b. Make sure the phone's Bluetooth is turned on. c. Please enable GPS (location information) in the phone settings and grant location permission for the app in the permission management. Please go to the device list in the app, click on the device to connect. Thank you 2. This printer only uses thermal paper, not regular paper for printing. 3. FAQs: Q: When I add the device to the application, I cannot find the connected device? A: Please check if the device is turned on to ensure the Bluetooth is working properly. Q: What should I do if my device cannot print? A: ① Confirm if the phone's Bluetooth is on and eliminate the possibility of others connecting to this device. ② Check if the thermal paper is jammed. ③ Check if the print head is overheated, if so, wait for the print head to cool down before trying to print. Q: Why is the printed paper blank without any content? A: This may be caused by incorrect paper installation. Please refer to the Replacing Print Paper instructions to reinstall. Q: Why do the printed words fade? A: ① Check if the device is low power. ② Check if there are stains on the print head, wipe gently with an alcohol cloth.