The Yesido YSP18 Open Wireless Bluetooth Earphone combines comfort and performance with its non-in-ear design, allowing you to stay aware of your surroundings. Featuring a liquid silicone molding process, these earphones provide a soft and elastic touch, while the ear-hook structure ensures a secure fit during use. With a 16mm full-range speaker and ergonomic golden three-point design, the YSP18 delivers rich stereo sound and long-lasting comfort, making it perfect for all-day listening. Specifications Brand: Yesido Model: YSP18 OWS Open Wireless Bluetooth Earphone Material: PC+ABS Bluetooth Version: AB1562M V5.3 (Loda) Bluetooth Distance: ≥10 meters (depending on mobile phone functions) Single Listening Time: About 5 hours (at 80% volume) Total Listening Time: About 20 hours (with charging box capacity) Headphone Battery Capacity: DC 3.7V / 50mAh x2 Charging Box Battery Capacity: DC 3.7V / 300mAh Charging Time: About 1.5 hours (wired) Key Features Non-in-ear open design ensures ambient sound awareness Ergonomic ear-hook structure provides a stable, secure fit Soft and elastic liquid silicone material for enhanced comfort Built-in 16mm full-range speaker for immersive stereo sound Extended listening time with up to 20 hours total using the charging box Fast wired charging in about 1.5 hours