Designed for durability and comfort, the Yesido YSP12 Bone Conduction Earphone delivers clear sound while keeping your ears open to your surroundings. With its AB5606B Bluetooth 5.3 chip and 250mAh battery, this hanging stripe earphone offers ultra-long usage time and stable connectivity. The IPX4 waterproof rating makes it perfect for sports, workouts, or daily commuting, while the 18mm speaker ensures consistent sound performance without in-ear pressure. Specifications Brand: Yesido Model: YSP12 Wireless Bone Conduction Earphone Color: Black Chip: AB5606B Bluetooth Version: V5.3 Battery Capacity: 250mAh Speaker Size: 18mm vibrator, 8Ω Usage Time: Around 8–9 hours Applicable Devices: Mobile Phone / Tablet Built-in Microphone: Yes Remote Control: Yes Waterproof Rating: IPX4 Key Features Bone conduction technology for open-ear comfort and safe listening Advanced Bluetooth 5.3 chip for stable, high-speed transmission 250mAh battery supports long listening sessions up to 9 hours IPX4 waterproof design ideal for workouts and outdoor activities 18mm speaker ensures clear and consistent sound performance