【High-Resolution Printing】The NIIMBOT B21Pro offers 300DPI print resolution, enabling crisp, clear printing of small and fine text for superior label quality. 【Versatile Label Sizes】Supporting label widths from 20mm to 50mm, this printer is ideal for various applications in homes, small businesses, and schools. 【Creative Design App】Access over 1500 icons, borders, and 249 free fonts through the companion app, with additional VIP-exclusive fonts and 1000+ design templates for inspiration. 【Multi-Platform Compatibility】Compatible with iOS, Android, and PC, ensuring flexibility in device usage and label creation. 【Compact and Portable】With dimensions of 30*94*61mm, this smart label printer is designed for easy portability and convenient use in various settings. Specifications: Material: ABS Dimensions: 30*94*61mm Print Resolution: 300DPI Charging Time: 3-4 hours Charging Port: Type-C Battery Capacity: 1500mAh Rated Input: 5V 1A Printing Method: Thermal printing Print Width: 20-48mm Label Width: 20-50mm Print Height: 8-200mm Print Speed: Max 50mm/s Operating Temperature: 0-45℃ Connectivity: Bluetooth-compatible