Wireless Bluetooth Headset No Ear Conduction Neck Headset Bluetooth 5.1 Features: Open-ear: This kind of earphone is designed in a not in-ear style, you dont need to wear it in the ear, making you feel more comfortable, and you can attention to the environment easily. Wireless: The bluetooth-compatible V5.1 ensures a stable connection and quick transferring, reducing latency and giving you a good listening experience. Noise cancelling: The equipped mic makes it easy for you to calls, keeping the sound and voice clear, and it can your hands, suitable for driving and working middle and low frequency sound, powerful, reduce distortion. Gently hang it on the ear to enjoy the long use without pain, while paying attention to the outside voice, keeping the surrounding alert and improving. Product Description: Features: Shock conduction horn, shock your auditory nerve. The skeleton is bent without deformation and cannot be folded. Wearing glasses during sports learning does not affect wearing. Strong power reserves, from the morning to hear the sunset. Life grade and sweat proof, without fear of sweating. Classic three key, bid farewell to key. Specification: Bluetooth Version: 5.1 Transmission distance: 15m Capacitance capacity:130mah Use time: 8-10 hours Charging time: 0.5 hours Speaker resistance: φ approx. 16mm/0.63inch 32Ω. Sensitivity: 90db. Work temperature: -10-50℃. contain: 1X headphones 1X charging line 1X instructions