m165ワイヤレスヘッドフォン4.1ワイヤレスイヤフォンヘッドフォンスポーツヘッドフォン吊り下げ型イヤフォンヘッドフォン  features:<br>1. new hardware upgrade: internal hardware upgrade consumes less power and lasts longer.<br>2. signal stability: the signal is more stable and the connection is smoother.<br>3. intelligent noise reduction: dsp actively reduces noise, strengthens data, makes calls clearer, faster, and the signal is more stable!<br>4. advanced chip: imported 4.1 high version of csr bluetooth chip, with high-definition microphone, compatibility, stability, functionality and other aspects have been significantly improved!<br>5. high-definition stereo sound quality: high-definition call, optimize music quality, let you enjoy the original call and music. experience hd calls and enjoy great music!<br><br>descriptions:<br>1. adopting imported 4.1 high version csr bluetooth chip, the signal is more stable and the connection is smoother.<br>2. it is comfortable to wear, conforms to the ergonomic design, and is not painful for a long time. it is suitable for driving and business calls.<br><br>specifications:<br>bt protocol: 4.1<br>channel: stereo<br>how to use: hanging ear<br>whether single or both ears: unilateral hands free<br>call time: 8 hours<br>charging time: 3 hours<br>features: voice control, call function, support music, multi-point connection<br>colors: white, black<br>size: 50*7*15mm<br><br>package included:<br>1 x wireless headset<br><br>notes:<br>please allow 0-2mm error due to manual measurement, thanks for understanding.<br>due to the difference between different monitors, the picture may not reflect the actual color of the item. please understand, thank you!