1The quality of sound is good, you can really enjoy it. 2Pick up and automatic pairing, convenient to use. 3Ergonomic design, comfortable to wear. 4Bluetooth 5.0 chip, transmission is faster and more stable. 5One button operation, easy and convenient to use.Features: The quality of sound is good, you can really enjoy it.Pick up and automatic pairing, convenient to use.Ergonomic design, comfortable to wear.Bluetooth 5.0 chip, transmission is faster and more stable.One button operation, easy and convenient to use.Light as feather, long time to wear will not be tired.With charging box, not afraid of power off. Specifications: Color: black, white (optional) Bluetooth version: Bluetooth 5.0Battery capacity: 1500mAhBluetooth distance: approx. 10 meters/ 32.8 ftHorn impedance: 8mm, 32Sensitivity: -42dBWorking temperature: 10 to 50Charging voltage: DC 5VStandby time: About 120 hoursMusic time: About 3 to 5 hoursCharging time: About 1.5 hoursCharging box parameter:Battery capacity: 1500mAhOutput voltage: 5VOutput current: 5V/1A Packagingsize: approx. 15*8*4cm/ 5.9*3.1*1.6 inch Package List: Headset * 1 Usb cable * 1 Replace earplugs (2pcs/set) * 2 Charging base * 1 Instruction manual * 1