The Bluetooth headset only 23g, ultra lightweight like nothing. It's very convenient carrying to go, and you will not feel uncomfortable even after prolonged wearing.Only one button for multi-functional control. Get rid of tedious operations and make life easier.Bone conduction open tone, listening to songs while paying attention to the sound of the outside world, maintaining vigilance around, and improving the safety of outdoor sports.Specification:Speaker type: bone conduction speakerLife time: 12 hoursFrequency response range: 20Hz-20KHzCharging time: 2 hoursWeight: 30gBuilt-in 8G memoryPlay time: 12 hoursTalk time: 8 hourspacking list:1 * Bone conduction earphone1 * Silent earplugs1 * Charging cableYour arrival is my honor, The customer is God, If you have any questions, please contact me in time. We will solve it for you within 24 hours.thank you for your trust and support, and wish you a happy life