Item Type: Wireless HeadsetMaterial: ABS, MetalBluetooth Version: 5.1Communication Distance: 10m/32.8ftHeadphone Battery Capacity: 60mAh (Lithium Battery) (Shipped with Built-in Battery)Charging Box Battery Capacity: 3300mAh (Lithium Battery) (Shipped with Built-in Battery)Speaker: 10mm/0.3in True Copper Ring SpeakerMusic Time: 4-6 HoursTalk Time: 4-6 HoursCharging Time: 1-2 HoursPackage List2 x Headset4 x Ear Cap1 x Charging Compartment1 x Data Cable1 x Manual1Just take out the 2 earphones from the charging box, they will automatically connect to each other, and then you can easily enter the bluetooth settings of the phone in one step to pair the earbuds. 2Wireless earphones do not need to carry wired earphones, and the stereo quality of these earplugs is very good, and the pairing speed is also very fast. 3When they are removed from the protective case, they can also be immediately connected to previously connected devices. 4The bluetooth wireless headset shell is made of highquality ABS material,which is durable. 5The soft and comfortable wearing experience and the beautiful vocals that shock the soul will take you into the palace of music.