Features EASY TO USE --- B21 Bluetooth label printer is compatible with for Android and for iOS devices. Install the for NIIMBOT application from the for App Store and for Google Play, open the B21 label printer, and open the Bluetooth connection. Select and connect APPLICABLE SCENARIOS --- This label printer is an ideal tool for supermarkets, stores, clothing, jewelry, small business owners, offices, and home organizations. MULTI FUNCTION --- This printer provides for NIIMBOT APP functions such as automatic template matching, image recognition, and batch printing, as well as over 20 fonts and thousands of image materials. ABS MATERIAL --- Made of premium ABS material, this printer has a retro appearance, wear and scratch resistant, has a long life span. AUTO SHUTDOWN --- Label printer will automatically turn off when paused for 15 minutes to save power. Specification:Item Type: Wireless Thermal Label Printer Model: B21 Material: ABS Voltage: 5V 2A Battery: 3.7V lithium battery 18650 x 1 1500mAh (shipped with built in battery) Printing Method: Thermal printing Resolution: 203dpi Connect Computer: USB (requires driver installation) Features: Wireless design, supporting long distances Print directly without ink, toner, or tape. Supports All Major Label Formats: Price, date, size, weight, name, etc. Widely used and easy to use. Small and lightweight, convenient for you to carry. Roll Paper: Approx. 55 x 45mm / 2.17 x 1.77in Applicable Label Width: Approx. 0.8 to 2in / 2.03 to 5.08cm Size: Approx. 13 x 9.4 x 6cm / 5.1 x 3.7 x 2.4in  Package List:1 x Printer1 x Roll Paper  1 x Data Cable  1 x Manual  Package List 1 x Printer 1 x Roll Paper 1 x Data Cable 1 x Manual