This is a Bluetooth thermal label printer with auto label detection and a 4.25\" label width, designed for desktop use. It comes equipped with convenient Bluetooth technology, compatible with IOS, Android, Windows, Mac OS, Linux, and Chromebook devices. With a printing speed of 150 mm/s and support for label widths ranging from 1.57\" to 4.25\" (40 - 108 mm), this thermal printer can help you reduce printing time and increase efficiency. Additionally, it boasts a high resolution of 300dpi, making labels easy to scan and read, and adopts advanced thermal printing technology that eliminates the need for ink or toners. The printer features automatic label detection, ensuring accurate label size and positioning, and preventing page deviation or wastage. The package includes the thermal label printer, a power cord, USB cable, USB flash disk, USB-C converter, 30 label papers, a box-opening card, and a user manual. This printer is ideal for use in various settings such as business offices, express, shops, warehouses, and other places.