Specifications

FM built in
Bluetooth V3.0
Up to 14 hours Call time
Up to 3 month standby time
Connect 2 devices at the same time

Compatible Bluetooth Specification V3.0 + EDR + eSCO

Support Model: HFP, HSP, A2DP, AVRCP

Operating Frequency Band: 2.4GHz ~ 2.48GHz unlicensed ISM band
Class 2 Output Power up to 10 meters 
Support Headset and HandsFree profiles 
Support Multiple paired, allows a speakerphone connect to two phones. 
(Memory Up to 8 Bluetooth Phone paired) 
Integrated with echo cancellation and Noise suppressor 
Built-in speaker and microphone 
Battery type: Rechargeable Lithium DC 3.7V, 800maH (BL-5B) 
Talk time: up to 15~16hours 

Standby time: up to 3 months 
Charger time: 2~3hours