※The right ear is not working. There is no deterioration in the exterior. Recommended for those who can repair it.※ Item details are listed below. This is the pink SHOKZ OpenRun Pro, a high-end bone conduction earphone. I used it for a year, about 5 hours a week on a treadmill indoors. Today, the sound stopped coming from the right side while I was using it. I haven't twisted it or given it any strong impacts during its use. I bought it on Mercari, and the seller at the time said it was a replacement for a new one just before the warranty expired, so the warranty itself has expired. The exterior of the earphones has not deteriorated, so I recommend it to those who can repair it themselves. ●Product Description High-end model bone conduction earphones OpenRun Pro SKZ-EP-000010 Pink Brand: Shokz Wearing style: Both ears, integrated left and right Earphone/Headphone type: Neckband type Structure: Bone conduction Color: Pink Wireless/Wired connection: Wireless Earphone/Headphone features: Microphone, Sound quality adjustment, Waterproof, Splash-proof, Remote control Low-frequency range (Hz): 20.0 Hz High-frequency range (kHz): 20.0 kHz Sound pressure sensitivity (db): 105.0 db Wireless standard: Bluetooth Bluetooth codec: SBC IP standard (waterproof standard): IPX5 Charging time: 1.0 hour Weight (g): 29.0 g