FM digital radio, no AM high reception sensitivity, channel memory function for quick access to your favorite programs. The frequency range is 50-108 MHZ. Suitable for running, lawn, cycling and other outdoor activities.Lithium battery Rechargeable Lithium battery (650mAh), run time more than 24 hours. It can be fully charged in about two hours.Memory button to find your favorite station without taking too many steps. Just set a regular listening frequency and press the M button to turn it on. It can also be used as an emergency channel.Not just a radio, it supports an external 3.5mm AUX cable, so you can use it as a computer headset during meetings and enjoy your own music.Light and comfortable Very light. These earmuffs give you a light and comfortable experience. The ergonomically designed, double-layered headband stays close to the head without causing stress. Type: Battery PoweredMaterial:plasticcolour:BlackPackage Contents:1 x FM Radio HeadphoneOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.