SONY / MDR-EX31BN R

Digital noise canceling that cuts noise by about 98%. Wireless stereo headset with one-touch connection (NFC) function

■ Wireless stereo headset

＜Specifications＞
■ Communication method: Bluetooth standard version 3.0
■ Output: Bluetooth power class2
■ Maximum communication distance: about 10 m
■ Frequency band: 2.4 GHz band (2.4000 GHz-2.4835 GHz)
■ Modulation method: FHSS
■ Compatible Bluetooth profiles: A2DP, AVRCP, HFP, HSP
■ Compatible codecs: SBC, AAC, aptX
■ Supported content protection: SCMS-T method
■ Transmission band (A2DP): 20-20,000Hz (44.1kHz sampling time)
 
Headset (receiver part)
■ Model: Closed dynamic type
■ Driver unit: About 13.5mm
■ Battery life (continuous audio playback time): (NC ON) up to 9.0 hours, (NC OFF) up to 10.5 hours
■ Battery life (continuous talk time): (NC ON) max 6.5 hours, (NC OFF) max 7.5 hours
■ Battery life (standby time): (NC ON) up to 30 hours, (NC OFF) up to 100 hours
■ Weight: about 34g
■ Charging time: about 2.5 hours
 
Headset (microphone part)
■ Model: Electret condenser type
■ Directivity: Omni-directional
■ Effective frequency band: 100-4,000Hz

Headset
■ Power supply: Lithium-ion rechargeable battery (built-in)
■ Charging time: about 2.5 hours
■ Weight: about 34g