1,[Bluetooth 1] The wireless headset is equipped with the latest bluetooth 1 chip, which makes the connection more stable and the transmission distance is long. 2,[Low Power Consumption] Sports headset built in 120mAh lithium battery, low power consumption, about 5 hours of talk time, about 4 hours of play time. 3,[No Delay] Bone conduction headphone provides a fast and stable connection, allowing you to listen to music, watch videos, and play games without delay. 4,[Comfortable] This bluetooth earphone adopts ultra lightweight design and ergonomic design, it is not easy to loose or fall off, and it is not burdensome to wear for a long time. 5,[Open Ear Design] Open ear design allows you to hear the surrounding sounds when you use it to listen to music, which can avoid some dangerous situations and make it safer. 1 x Bone Conduction Headphone1 x Data Line1 x Chinese and English Manual Item Type: Bone Conduction HeadphoneMaterial: ABSModel: VG05Color: BlackBluetooth Compatible Version: V 5.1Wireless Distance: Approx. 10m or 32.8ftSpeaker: Approx. Φ8mm or 0.3inBattery Type: Built in 120mAh Lithium BatteryTalk Time: About 2.5 HoursPlaying Time: About 4 Hours Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.