Headphone unit * 1<br>Type: Sealed dynamic type<br>Driver unit: about 13.5mm<br>Mass * 2: about 34g<br><br>Headphone part (Other)<br>Power supply: Lithium-ion rechargeable battery (built-in)<br>Charging time: about 2.5 hours<br>Battery duration (continuous audio playback time): (NC ON) up to 9.0 hours, (NC OFF) up to 10.5 hours<br>Battery duration (talk time): (NC ON) maximum 6.5 hours, (NC OFF) up to 7.5 hours<br>Battery duration (between standby time): (NC ON) up to 30 hours, (NC OFF) up to 100 hours<br><br>Microphone part<br>Model: electret condenser type<br>Directional characteristics: omnidirectional<br>Effective frequency band: 100-4,000Hz<br><br>Noise canceling<br>Total noise suppression amount (TNSR): about 17dB<br><br>accessories<br>USB cable: ● micro USB cable<br>Earpiece: hybrid earpiece S, M, L (2 each)<br>Warranty: Yes<br><br>* 1 product with a receiver includes a receiver unit<br>* 2 code is not included<br>* 3 The Bluetooth profile, is what was normalized function for each characteristic of Bluetooth products<br>* 4 things audio compression conversion method<br>* 5 44.1kHz sampling time<br>