Specifications:Bluetooth Version: 5.0Bluetooth Range: 10m/33ftBluetooth Chip: BluetrumCharge Input: 5 V DCSensitivity: 95 dBBattery Capacity: 180 mAhPlayback time: 6 - 8 hoursCharge Time: 1.5 hoursSpeaker:Driver: 2 x 30 mmImpedance: 32Frequency Response: 20Hz - 20kHzFeatures & Benefits:- Hands Free Calling- Bluetooth- Up to 8 hours playtime- Machine Washable Headband- On-ear ControlsWhat's in the boxPackage Contents:- Volkano Kids Bluetooth Headband Headphone- Charging Cable- Instruction Manual