Bluetooth 5.0 has a steady signal and good sound quality. Exercise as you like with magnetic ear shells that are impossible to shake off. Soft and skin-friendly, the silicone collar is comfortable to wear. Play as you like with a memory collar and a flexible neckline. The appearance is stunning and small, with vibrant metal ear shells that are striking. Nine hours of nonstop playback, extended standby, and endless pleasure in lovely music. Excellent ergonomic design, long-lasting speakers, and no fatigue.