description: -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 Bluetooth connectivity for hands-free calling FM transmitter for streaming music from your device Compatible with various MP3 accessories and portable audio devices Compact design for easy installation in your vehicle Enhances your driving experience with wireless convenience