Built-in battery: 3600mAh lithium battery
Support microphone audio and HD audio overlay collection
The high-toughness frame with thickness will not contact your nose and face
please note that this package does not include an AC adapter
The microphone consisting of a good cardioids polar pickup pattern
Home Small Phone Office Wireless Wrong Question Paper Student Portable Thermal Printer, Style: Bluetooth Edition+100pcs A4 Paper RETEVIS Built-in battery: 3600mAh lithium battery1. The built in battery can be used outdoors, and it can be printed immediately when printing is needed, without the need to start up, warm up, and connect wires like an inkjet laser printer for a long time 2. Special printing paper, BPA free, safe and environmentally friendly 3. Fluent writing with ballpoint pen, pencil and fountain pen 4. Thick material, suitable for different use scenarios: student homework, work materials, etc. 5. The handwriting