5 In 1 Function: Bluetooth Music Receiver/Micro SD Player/FM Stereo Radio/ Bluetooth Talk/3.5mm Headphones.Bluetooth mode with a built-in microphone.Foldable & Soft: Adjustable length to fit different sizes. Earmuffs used with Skin-friendly Leather Material, and super soft over-ear pads are not just more comfortable for long-time wear.Colorful LED Lights: Equipped with colorful LED lights, After turning it on, long press the Play button to turn the light on or off. The LED lights will dance and flash with the music.WIDE COMPATIBILITY: 5.0 Bluetooth connection, compatible with most smartphones, 33 feet range connection lets your kids enjoy wireless freedom of movement!The Bluetooth headphones are charged with a 400mAH battery, which provides about 8 hours of talk time and 180 hours of standby time. It only takes 1 hour of charging time to fully charge the battery. Never worry about power outages during your music time. at the same time, The 3.5mm audio interface allows you to enjoy music even when the headset is out of power.