Features:
Bluetooth version: Bluetooth V2.1+EDR
Frequency range: 2.4GHz-2.48GHz unlicensed ISM band
Transmission power: Class2
Transmission distance: up to 10m
Support multiple paired, allows a speakerphone connect to two phones.
Integrated with echo and noise cancellation
Built in speaker and microphone
Internal battery can be charged by the solar panel or through the original USB cable.
Talking time: 15-16h
Standby time: 1000h
Charging time: about 2-3h(car charger), about 15h(solar power)

Package included:
1 x Speakerphone
1 x Car charger
1 x USB cable
1 x User manual
6 x Windshield Mount