: -Able to pair with any mobile phone with Bluetooth function -Up to two mobile phones can be connected at the same time -Built-in high-efficiency rechargeable lithium-ion battery -Battery backup time up to 21 days (manufacturer data) -Talk time up to 10 hours -The ability to play navigation commands/music from the phone -Built-in powerful speakers -Bluetooth V5.0 EDR technology -Noise reduction, echo and DSP sound enhancement system -A2DP system supports audio profiles (play music / GPS commands) -Automatically pair with memory device -Able to use the mobile phone at a distance of up to 10m -Aesthetic signal LED diode -Support one-key answer and one-key reject calls -Support wake-up siri function, only applicable to compatible with iPhone specification: Talk time: up to 10 hours Standby time: up to 21 days Communication method: Bluetooth V5.0 EDR Power supply: DC 5V Built-in lithium ion battery: 550mAh Charging time: about 2 hours Transmission distance: 10m The package includes: Bluetooth*1 USB charging cable*1 car bluetooth talker FM Transmitters MP3 Accessories、Portable Audio、Electronics