【Product Condition】 ・This product was opened for operational testing from an unopened item. ・It has no signs of use and can be used as if it were new. ・Operation confirmed. Please purchase with your understanding. 【Product Details】 ■ Yamaha's unique "sound and musical reality expression" - Yamaha's unique "Listening Care" technology optimizes the sound balance according to the volume, reducing the burden on the ears. ■ An emotional music experience - Beautiful and refined design with a musical instrument motif - Low-frequency reproduction that expresses the dynamism and dynamics of sound and music, and sound that accurately conveys nuances and textures ■ Convenient features that support "sound and musical reality expression" and "emotional music experience" - Dedicated app "Headphones Controller", voice assistant (Siri/Google Assistant) compatible 【Product Specifications】 Body weight: 19.5g Function: Wireless (left and right cords) Type: Canal type Bluetooth: Bluetooth compatible Bluetooth Class: Bluetooth v5.0 Bluetooth supported profiles: SBC, AAC Bluetooth Version: 5.0 with BLE Bluetooth supported codecs: SBC, AAC Charging terminal: USB Type-C Music playback time: Up to 14 hours Headphone charging time: Approximately 2 hours (full charge) Playback frequency band: 20Hz～20kHz Impedance: 16Ω Waterproof/splash-proof: Not waterproof/splash-proof Remote control/microphone: Remote control/microphone compatible Accessories: USB charging cable, ear tips each 1 set (SS/S/M/L)