Product Product Name: Wireless Bluetooth HeadsetTransmission range: 10 mHeadphone charging time: approx. 2 hoursBluetooth Performance: 2.402-2.480GHzBluetooth version: V5.1Headphone working time: about 10 hoursInput Voltage: 3.7-5VDCProduct colour: whiteWhether single or double ears: bilateral stereoWaterproof performance: Does not support waterproofFunction: call function, music supportThe product includes: Headphones*1describe:Thanks to the ultra-soft, detachable ear cushions, you can watch TV comfortably for long nights or listen to music for hours. The elastic earphone adapts perfectly to the shape of your head. These soft, firm headphones with rotating and tilting ear cushions aredesigned for comfort and long listening pleasure.The smoothest transmission and most stable connection ensure ultra-clear call sound, easy access to music volume control and call function support anytime, anywhere, professional audio decoding technology toReduction of losses in music transmission,Simply connect the headphones to your television or hi-fi system. Turn on the device and set the volume to around 60%. Then adjust the volume directly on the headphones if necessary. So your listening pleasure always remainsnoiselessDeep Bass: It can provide a wide range of sound, with deep bass and immersive treble, deep bass, clear sound and stereo sound, bring you great music enjoyment.Since the earbud unit has a relatively high fear of getting dirty, its network coverage has become the focus of protection. First of all, it must be clean and the part of the unit should not be exposed to too much dust. WipeDo not use alcohol, thinner or other solvents on the machine;