sanag B21S Wireless Headset

True Bone Conduction: 360 ° no hole design, through the vibration of vibration waves into the brain without sound holes, to avoid the embarrassment of sound leakage, have a clearer listening experience. Open Ear Design: The open design allows you to clearly perceive the ambient sound while enjoying your music, detecting potential dangers during riding or sports in time, and providing more peace of mind during outdoor activities.