Sony Wireless Noise Cancelling Stereo Headset B with Microphone MDR-EX31BN MDR-EX31BN / /

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