truefree Open Ear Headphones F1 Wireless Bluetooth 5.3 Air Conduction Headphones 11H Playtime HiFi Stereo Headset with Headband Lightweight Earphones for Workout Running Cycling Climbing Driving

truefree F1 Sports Headphones Air Conduction Open-Ear Bluetooth 5.3 Headset with ENC Tech for Calls, Multipoint Connection, 11 Hours of Playtime, Over-Ear Wireless Earphones for Running, Workout, Gym

truefree O1 Open-Ear Headphones, Bluetooth 5.3 Wireless Earbuds with Ear Hooks, Over-Ear Air Conduction Tech for Sports, Four Mics Clear Calls, 45 Hours of Playtime, 16.2mm Enhanced Bass, App Control

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