Bose wireless sports earbuds. Purchased from Bic Kojima and used for about 2 months, then not used afterwards. I threw away the warranty when it expired. They cost around 23,000 yen. Please refrain from purchasing if you are sensitive to used items. - Brand: Bose - Model Name: Sport Earbuds - Accessories: Ear tips (multiple sizes) - Color: Gray/Yellow ※ Box and instruction manual included ・Impedance: 16 ohms ・Noise Control: Noise isolation Immersive Bose sound — Sound that makes you feel like the artist is right next to you, encouraging you to push yourself just a little bit more, one more time. Stable and comfortable fit earbuds — Comes with three sizes of StayHear Max tips, allowing you to adjust the fit. They won't hurt your ears and won't fall out even during intense sports. Water-resistant earbuds — IPX4 rated, and the electronic circuits are covered with a special material, protecting them from splashes wherever you exercise. Clear calls — Beamforming microphone array separates your voice from surrounding noise. The person you're talking to can hear your voice clearly. Simple touch controls — Instead of buttons, it uses a capacitive touch interface. Tap to play and pause music, answer calls, and more. Long continuous use — Can be used continuously for up to 5 hours. The charging case allows for two additional charges, providing approximately 10 more hours of use. Reliable Bluetooth connection — A uniquely designed antenna is built into each earbud, so the connection rarely drops. The Bluetooth communication range is 9 meters. Bose Music app — Download the app and sync it with your earbuds to name your earbuds, adjust control settings, check battery life, and more.