Feature: 1. A Useful Printer: USB wireless thermal printer supports computer and mobile printing. The computer has a USB interface, and the phone has a Bluetooth connection. The printer supports local program upgrades. 2. Excellent Performance: The pocket printer supports multi interface time sharing printing, and the dual mode Bluetooth 4.0 connection is more stable, suitable for multiple locations, platforms, and more. 3. High Speed Printing: The portable thermal printer supports Bluetooth 4.0 for Android, for iOS, and for Windows, allowing you to print wireless data on your device. Printing speed up to 150 mm/s, faster and more energy efficient. 4. Multiple Connections: Bluetooth thermal printer supports Bluetooth or USB computers and is compatible with multiple format of test, picture, barcode, QR code, etc. 5. Wide Application: An inkless pocket printer is used to print black and white images, photos, memos, shopping lists, study, meeting notes, business, work plans, office assistants, shopping lists, labels, messages, lists, web pages, QR codes, records, and more. Specification: Item Type: Bluetooth Thermal Printer Battery: 1 x 7.4V lithium battery, 2600mAh. Shipped with built in battery. Resolution: 203dpi Output: Black and White Printing: Thermal Printing Printing Speed: 100-150mm/s Communication: USB, Bluetooth. Paper Type: For label paper, express delivery surface paper. Charging Time: 2-4H Printing Content: For Text: Supports Chinese, English, Japanese, etc., supporting a full range of office software printing such as Word, Excel, PPT, etc. For Image: Supports JPG, BMP, TIF, JPEG and other formats of images, with no development required for driver mode, and supports grayscale printing of images. For Barcode: UPC-A, UPC-E, EAN-13, EAN-8, CODE39, CODEBAR, CODE93, CODE128, TIF. For QR Code: QRCOE, PDF417 Supporting System: For Windows, for Android, for iOS, for Linux. Working Temperature: -10 ℃ -50 ℃ Storage Temperature: -20-70 ℃ Working Humidity: 20-50% Storage Humidity: 5-95%. Package List: 1 x Bluetooth Thermal Printer1 x Data Cable1 x Paper Limiter