TRUEFREE O2 Open-Ear Headphones, Air Conduction Bluetooth 5.3 Wireless Earbuds, 22 Hours of Playtime, Four Mics Clear Calls, 15mm Enhanced Bass, Multipoint Connection, App Control, Commute, Workout

truefree O2 Open Ear Headphones with Directional Acoustics, Ultra-Light Weight, IPX5 Waterproof, 22H Playtime, Multipoint Connection, App Control, Bluetooth 5.3 Wireless Earbuds for Workouts

truefree F2 Open Ear Headphones Bluetooth 5.3 Air Conduction Wireless Headphones Sport Earbuds with 16.2mm Enhanced Bass,Dual Mic for Clear Calls,15H Playtime,Multipoint Connection,App Control