Sony MDR-EX31BN/B Wireless Stereo Bluetooth In-Ear Headset with Noise Cancelling, Mic, Black

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Actual color may vary slightly from the photos due to screen settings, lighting, or production batch differences. 【Size Note】

Please refer to the size chart in the listing images and/or listing description before purchasing, as sizing may differ slightly from your local standards (cm-based measurements).

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Type: Sealed dynamic type Driver unit: Approximately 13.5mm Mass: approx. 34g Power source: Lithium-ion rechargeable battery (built-in) Charging time: Approximately 2.5 hours Type: Electret condenser type Directional characteristics: omnidirectional Noise-canceling function included • 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) up to 6.5 hours, (NC OFF) up to 7.5 hours • Battery life (standby time): (NC ON) up to 30 hours, (NC OFF) up to 100 hours Included: Hybrid ear tips S, M, L (2 of each), micro USB cable

The Sony MDR-EX31BN is a compact wireless in-ear headset that combines Bluetooth convenience with digital noise cancelling technology for clearer sound during commutes and daily use.

Sound & Noise Cancelling - 13.5mm dynamic driver units deliver a frequency response of 20Hz–20,000Hz with 16 ohm (1kHz) impedance - Digital noise cancelling technology reduces ambient noise for a more focused listening experience - Closed dynamic design for improved sound isolation

Wireless & Calls - Bluetooth version 3.0+HS with support for A2DP, AVRCP, HSP, and HFP profiles - Wireless range of approximately 10m - Built-in electret condenser microphone for hands-free calling - Talk time of approx. 7.5 hours; standby time of approx. 100 hours

Battery - Built-in lithium-ion rechargeable battery - Approx. 10.5 hours of continuous music playback per charge - Approx. 2.5 hours charging time via USB cable

Design & Fit - Lightweight at approx. 34g (without cord), with a 40cm neckband-style cord - Inner-ear wearing style for a secure, comfortable fit - Includes hybrid silicone earbuds in S/M/L sizes (3 pairs) and a USB charging cable

Color: Black