Description:Bluetooth version: Bluetooth 5.1+EDRReceiving distance: barrier-free 15mSpeaker size: 40mmCharging time: 2-3 hoursLife time: 24 hours (maximum volume)Standby time: 300 hoursProduct size: 18x19x7.5cmFrequency response: 20Hz-20KHzImpedance: 30QProduct weight: 228gBattery capacity: 650 mASpecifications:1.Colorful Led Lights & Long Hrs PlaytimeUnique led breathing light can switch multi color automatically, bring you 24 hours music play time, romantic and great time. Under the LED mode, the battery can last Long hrs. Upgraded battery allow you have Long hours music enjoyment, you can use it as a wired headset with provided audio cable. Note: You can short click on/ off button , to stop the light.2.More Comfort & Snug Fitexceptional soft protein earcup, adjustable headband, skin-friendly rubber layer provide you more comfort, more durability. while the headbands rotating joints automatically adjust the angle of the ear cups to fit your head. Reduces pressure on ear, allow your to find the perfect fit and a long-listen comfort.3.TF Slot & Foldable DesignThe TF slot support within 32GB TF card, Free yourself from harassment of phone. Foldable design make it easier to carry and save your space, you can bring it wherever you want to go. (TF mode only support for MP3 format.)4.Bluetooth 5.1 & Easy ControlCompatible with most of bluetooth devices, such as PC, Cellphone, tablets, TV, steady connection within 10M. Noise reduction HD mic, bring you a clear hands-free call experience, and answer any calls conveniently. Simple control help you handle any call, song switch, volume change. (the mic only work in wireless mode.)5. 4 In 1 Multifunctional Bluetooth Headphones: Long playtime bluetoothe 5.1 headphones + TF card music player + Romantic LED Light + Wired headset. Buy 1 product, you get 4 function. Proprietary 40mm large-aperture drivers combine with advanced bluetooth 5.1 tech, product incredible powerful sound and clear bass. can get a Balanced audio at all music style, and provide you a better listening experience in any environment.Package Included:1 * Bluetooh Headset1 * Aux Cable1 * USB Cable