Transmission range 10 meters Function power display, NFC function, voice control, support music, multi -point connection Stevid sound Ear earbud Whether or not two -sided three -dimensional sound Endurance time 5 (hour) Form FactorOver Ear Connectivity TechnologyWireless Wireless Communication TechnologyBluetooth About this item 1. design, comfortable to wear design style, fits both ears, light, and securely fits the earhooks, suitable for long-term wearing without discomfort to the ears 2. Bluetooth 5.3, widely compatible wireless bluetooth headset, using bluetooth 5.3 technology, you can easily pair and connect with smart phones, free of cable constraints, Bluetooth connection is stable, no Delay 3. Binaural separation designTwo earphones can be connected to a mobile phone at the same time, or you can use two earphones for each earphone separately. You can switch freely between the left and right earbuds without any additional pairing steps or interruptions. Lost or delayed music signal 4. Ergonomic design & comfortableBone conduction Bluetooth headset, lightweight design brings you an excellent exercise experience, whether in the gym or outdoors, suitable for running, cycling and other sports use 5. Keep in touch with the outside worldListening to music without blocking your ears allows you to understand the surrounding situation while listening to music. You can hear incoming cars or ringtones when you are running, cycling or driving, effectively avoiding some dangerous situations