Specification
Bluetooth compliance: Bluetooth V4.0
Operating frequency band: 2.4GHz-2.48GHz unlicensed ISM band
Operation range: Class 2, up to 10 meters
Support profiles: HSP and HFP Profiles
Talk time: 22 hours
Standby time: 180 hours
Battery charging Time: About 3 hours
Charger voltage: DC5.0V, 500mA
Battery: 650mAh, BL-5B(Lithium-lon Battery)
Size: 123mm*46mm*20mm
Weight: 73g(with battery)

What's in the box
1x Avantree 10BS
1x USB car charger
1x Micro USB charging cable
1x User manual
1x Sun visor clip
1x Rechargeable lithium battery