Printing method: Thermal printing Bluetooth version: 4.0 Interface: Power Jack, Mini USB Printing speed: 50 to 89.9 mm/s Dots per line: 384 Paper thickness: 0.05 to 0.10 mm Paper width: 57 ± 0.5 mm Printing width: 48 ± 0.5 mm Roll diameter: 25 mm Operating temperature: 10 to 50 degrees Celsius Internal characters: ASCII CH (8 x 16, 8 x 17, 9 x 24, 12 x 24); GB18030 (16 x 16, 24 x 24) Print command: ESC/POS compatible command set Paper feeding: Easy load paper system Black mark detection: Supported Battery: 1500mAh Li-ion battery (included) Charging time: Approximately 24 hours Standby time: Up to 100 hours Usage time: Up to 3 days Power adapter: DC 12V / 1A Shipping information: All items will be shipped within 3 business days after payment is received. Delivery typically takes 8–12 days, depending on location. For any questions, please . Customer support: During the shopping process, if you have any questions, please feel free to reach out. We respond within 24 hours. Thank you for your cooperation and we hope you enjoy a pleasant shopping experience. Products from Chunchuan's store