Sony WI-C310.
Product type: Headset, Wearing style: In-ear,Neck-band,
Product colour: GOLD.
Connectivity technology: Wireless,
Bluetooth profiles: A2DP,AVRCP,HFP,HSP,
Frequency band: 2.4 - 2.4835 GHz.
Ear coupling: Intraaural,
Headphone frequency: 20 - 20000 Hz,
Acoustic system: Closed.
Continuous audio playback time: 15 h,
Battery recharge time: 3 h,
Charging source: USB.
Audio formats supported: AAC,SBC