Wireless Bluetooth Headset Large Screen Digital Display Bluetooth Car Call Music Headset Specification: It can effectively the damage caused by the of sweat . Features Adopt advanced Bluetooth 5.1 technology to improve transmission speed. Accompanied by stunning sound, designed for comfort and practicality, unique and arrogant. Ergonomically designed for a more comfortable fit on the auricle. Applicable models: suitable for all Bluetooth-enabled mobile phones and smart devices Powerful features: button design, easy to use, phone calls and control music play by button. for in car calling and chatting, play games or working use. Super mini design: suitable for both ears, mini design make you comfortable and your ears when using, Smaller and More Invisible. Waterpfoof Level:IP4 Special Features:5.0 wireless Bluetooth; BLuetooth:5.1+EDR Battery Type:Polymeter Lithium Battery Headphone battery capacity:30mAh Charging box battery capacity:200mAh Charging Type:Charging box USB socket charging, headphone magnetic charging Headphone charging time:About 30 minutes Charging box charging time:About 2 hours Headphone life time:About 3 hours Charging box chargeable times:About 2 times Manipulation Mode:Key Material:ABS Product Size:Headphone：21.3x22x15mm；Charging box：63x40.7x28.7mm packing list: 2xBluetooth headset 1xBattery compartment 1xUSB cable