Product Features ★ Sounds that are Kind to Your Ears, Making Music Easier and More Free ● Equipped with YAMAHA's Unique Listening Care that Optimizes the Sound Balance and Reduces the Burden On the Ears. ● Fully Wireless with a Simple Design Based On Musical Instruments and Sound Quality that Allows You to Hear Each Sound Clearly, so You can Enjoy Music Freely and Freely ◆ Optimize Sound Balance According to Volume ● YAMAHA's Unique "Listening Care" Focuses On the Human Hearing Characteristics that Make it Difficult to Hear Low and High Frequencies as the Volume Decreases, and the Difference in How People Hear in a Listening Environment, and the Sound Balance is Optimized According to the Volume Correction to Become. ◆ Complete Wireless that is Hard to be Out of Sound ● Adopts Qualcomm's Audio System SoC (System-On-a-Chip) "QCC3026" and Supports the Left and Right Independent Communication Technology Qualcomm TrueWireless Stereo Plus. ● This Method, in Which the Content Transmission Side of a Smartphone or the Like Directly Transmits Audio Data to the Left and Right Earbuds via Bluetooth, Makes it Easier to Cut Off the Sound Compared to the Conventional Truly Wireless Earbuds, and Enables Comfortable and Long Listening. ※ ● The Sender of the Content Must Support TrueWireless Stereo Plus. ◆ Safe Even When Rain or Sweat ● It Corresponds to Life Protection Equivalent to Waterproof Protection Class IPX5, Protects Earbuds from Sudden Rain, Sweat and Splashes, and can be Used Comfortably. ◆ Even at the Fingertip, Even the VolumeAdjustment ● Just Touch the Side of the Earbuds and You can Adjust the Volume, Including Playing / Stopping and Skipping Songs. ◆ Long Battery Life of up to 24 hours ● It can be Used for 6 hours by Charging the Main Unit Only (about 2 hours), Which is Convenient for Daily Listening. ● Charges the Charging Case Three Times for up to 24 hours of Music Playback.