1. Listen to the correct song, record songs and phone calls, 2. Remember the call number, the last call, all the Chinese and English smart voice messages, boot, pair, turn off the phone power will send a low voice message; 3. The power capacity will be displayed on your Iphone, you can see the energy status at any time, don't worry about the power, let your life worry-free; 5. After the Bluetooth headset is turned off, connect to the mobile phone, connect the Bluetooth headset and then automatically turn on the mobile phone, which is more convenient; 6. Smart compatibility: compatible with all mobile phones, including Bluetooth, tablets, notebooks, singing,, movies, etc., universal mobile phones Wireless Type: bluetooth 5.0 ,WIFI Plug Type: Wireless Function: For Mobile Phone,For Internet Bar,for Video Game,Monitor Headphone,HiFi Headphone,For iPod,Sport,Common Headphone Connectors: None Frequency Response Range: 20-22000Hz Waterproof: No Communication: Wireless Active Noise-Cancellation: Yes Support Memory Card: No Vocalism Principle: Other Is wireless: Yes Support APP: No Style: Ear Hook Sensitivity: 120±5dB Line Length: None With Microphone: Yes Volume Control: Yes Model Number: i11 Resistance: 9Ω Control Button: Yes Brand No Brand SKU 100904278_NP-1021438430