Specification: Blue/Red LED indicating. Transmission distance: 10 Meter. Bluetooth type : Bluetooth 5.0 +EDR. Frequency Response: 20HZ---20KHZ USB: micro USB. Power: 200MAH lithium rechargeable battery. Play time : 5-7 hours headband material: polyester. Suits for both Men&Women. Color: Black Package:1pc + USB charging cable+User manualGreat Multi Sleep Headphones: Sleep Headphones & Sleep Mask & Sports Headband 3 in 1 Bluetooth Headband Headphones allows you to listen to music without having to wear additional headphones, and protect you from being disturbed by your mess hair and sweat. Built-in microphone to let you won't miss any callings. Perfect suitable for gym, workout, running, yoga, and other outdoor activities. Even if you don't use the music, the eye cover is comfortable enough to sleep in any positionLonger Service Time & High-quality PlaybackSleeping headphones offer an upgraded USB chargeable battery, provide 5-7 hours playing time. Quality chipsets ensure clear sound and lossless music even the headphones are in the sports headphones. Without having to use your phone. Bluetooth headband bring you peaceful sleep all nightSoft and Breathable Bluetooth HeadbandBluetooth Headband sleep headphone is extremely soft and lightweight, which is made of durable braided cord and offers a breathable mesh lining, will easily stretch to fit all head sizes, also incredibly soft and hypoallergenic. Bluetooth headband Sleep headphones are washable, simply remove the speakers and clean the band. Useful for wearing an eye mask for sleeping so the light-blocking feature is helpful.