✨ New, Unused ✨ Immediate purchase OK ✨ Free shipping, anonymous delivery May be changed from Rakuraku Mercari Delivery ↔︎ Yuuyu Mercari. Opened for confirmation. Bone conduction earphones Bluetooth 5.4 Swimming IP68 waterproof 32GB memory built-in up to 8000 songs bone conduction earphones Bluetooth pool microphone wireless headphones 8 hours continuous playback/call swimming cap/goggles/helmet compatible running cycling sports headphones gray 【2025 Industry's Latest Swimming Earphones】 With an IP68 waterproof design, it can withstand complete submersion up to 2 meters deep. With complete waterproof and immersion resistance, you can enjoy music while swimming, bathing, or surfing. Even when running or cycling in the city, you can immerse yourself in music while being aware of your surroundings, providing peace of mind. The S18, made of ultra-lightweight, high-strength, soft silicone and plastic materials, achieves a comfortable fit that makes you forget you're even wearing earphones. 【Bluetooth 5.4 & 32GB MP3 Storage】 With an IP68 waterproof design, it can withstand complete submersion up to 2 meters deep. With complete waterproof and immersion resistance, you can enjoy music while swimming, bathing, or surfing. 【Bluetooth 5.4 & 32GB MP3 Storage】 Two devices in one, infinite possibilities. Equipped with Bluetooth 5.4, it achieves fast and stable connections, seamless communication, and an extended wireless communication range. With 32GB of MP3 storage, you can save all your favorite music (up to 8000 songs) and enjoy a wide range of music libraries to suit your preferences. 【Open Ear】 The open-ear design of the S18 allows you to stay connected to the world without sacrificing comfort or sound quality. You can enjoy comfortable listening all day long, whether in or out of the water. You can also interact with people and things around you while commuting, at work, or at your desk. 【Long Battery Life & Comfortable Fit】 The battery lasts for 8 hours on a single charge, so you don't have to worry about battery life even during long swims/runs/video conferences.