ColorRedMini Portable FM RadioMini radio has a very portable design and exquisite workmanship, the surface using imported UV technology. Size details are 4.09 x 2.0 x 0.86 inches. Directly use the number button to enter the channel you want, FM:87.5-108 MHz. Multifunctional With this FM 87.5-108MHz / AUX input & TF Card Music Play / Recording radio, you can unwind yourself by turning into your favorite station or the music you like. FM radios with best reception, any radio station will be there for you. And a function of Auto Screen Off when playing prolongs the use time excellently. Besides, the LOCK BUTTON will perfectly avoid accidental operation while you are on a crowed subway, bus, etc.MP3 Music Player ModeSupports TF Card / Micro SD; a standard 3.5mm Audio Cable if necessary, easy to plug in your iPod, Smartphone, tablet, laptop and other MP3 player or any audio source that uses a standard 3.5 mm jack. It has a large LED Screen Display, look more elegant and clear.Rechargeable Li-ion batteryRechargeable BL-5C battery little radio with Rechargeable 1200mAh Lithium Battery; It last for at least 10 hrs after one charge; The battery can be easily removed and replaced. Take outside and listen to radio, music during moring cooking, for Walking Jogging, Gym, Camping , hiking, biking or beach, whatever you need it to do.