Listen to the correct song, record songs and phone calls, 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; 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; 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; Smart compatibility: compatible with all mobile phones, including Bluetooth, tablets, notebooks, singing, QQ music, movies, etc., universal mobile phones Drive: 15mm Impedance: 32 ohms Bluetooth version: Bluetooth v5.0 + EDR Power level: Level II Output power: 30 MW Bluetooth distance: 10 m barrier Frequency response: 20Hz 20000 working voltage range: 3.0 V-4.2 V. Microphone sensitivity: -42dB with A2DP / AVRCP high quality stereo audio transmission and remote control protocol 11 powerful noise cancellation circuit (active noise reduction) 12 talk time is about 2-3 hours 13 music time is about 2-3 hours Brand TWS Earbuds SKU 100354461_NP-1020634942 Compatible Devices Not Specified Model i11