Details:With the built-in quality MP3 decoding chip, you can enjoy MP3 format music stored in the mini memory card, and wireless music enjoyment is much more wonderful. The built-in FM stereo radio can store 20 channels program enriching your enjoyment.Features:Wireless MicroSD MP3 PlayerSlot for

Details:With the built-in quality MP3 decoding chip, you can enjoy MP3 format music stored in the mini memory card, and wireless music enjoyment is much more wonderful. The built-in FM stereo radio can store 20 channels program enriching your enjoyment.Features:Wireless MicroSD MP3 PlayerSlot for MicroSD/TF card to listen to MP3 MusicEnjoy music in this head phone with your other digital devices by using accessoriesFM stereo radio Headhpones and CollapsibleInstant music Sharing with another headphone by 3.5 mm standard cableCompatible with any music players using 3.5mm standardUp to 12 hours of playing timeStandard charging time about 2 hours.Specifications:Speaker Diameter: 40mmSpeaker impedance: 32 ohmSpeaker sensibility: 108db /- 3dbFrequency response: 20-20 000hzRadio frequency range : 87-108 MHz