Features:
Adjustable Headband
Intelligent voice navigation
Supported profiles: HFP， A2DP， AVPCP
Support 3.5mm stereo audio input
Built-in mircrophone suport digital signal processing echo cancellation technology
Offers smooth conversation
All weather， waterproof design， but not in water
Can also be used as Bluetooth handsfree headset for a cell phone.
Easy to use， with no installation required.
Easy installation and dismantlement

Specifications:
Model:BQ-618
Bluetooth version: V3.0
Operation range: 20m
Working time: up to 20 hours
Standby time: 200 hours
Charging time: 2.5 Hours
Charging voltage: DC 5 V/500mA
Charging Port: Micro USB
Color: Black，white， red， pink
Headset size: up to 49.5cm
Speaker diameter: 30mm
Net weight: 147.5g

Packing List:
1 x Bluetooth headset
1 x Charging cable
1 x audio cable