Sony WH-XB910N Noise Cancelling Headphones - Black

Sony WH-XB910N - Black. Product type: Headphones, Wearing style: Head-band, Recommended usage: Calls/Music. Connectivity technology: Wireless, Bluetooth profiles: A2DP,AAC,AVRCP,HFP,HSP,SBC, Frequency band: 2.4 GHz. Ear coupling: Supraaural, Acoustic system: Closed, Headphone frequency: 7 - 25000 Hz. Microphone type: Built-in. Battery type: Built-in battery, Battery technology: Lithium-Ion (Li-Ion), Battery life (max): 30 h