PRODUCT DESCRIPTIONPORTABLE BLUETOOTH SPEAKERS STEREO O WITH FM RADIO simply connect your smartphone, tablet and other devices to the speaker via Bluetooth.A radio reception with radio frequencies from 87.5 to 108MHz.Thanks to the integrated USB port and micro secure digital card slot, you can listen to your music anytime and anywhere from your USB stick or secure digital card.Also offers a handsfree phone function for the car or any other activities that accept calls with key and then hang up after the call and continue playing the music.Fit your home, office, etc.1.Support A2DP,AVRCP, Handsfree profile,FM radio2.With FM function, can search radio station broadcast automatically3.International advanced Wireless chip and circuit design techniques,support all wireless devices.4.With Hi-Fi speaker, to make sure the clear and bright sound.5. Support Micro SD card and USB card, play MP3 format audio.6.The wireless working distanceis 10 meters.7.With AUX line in, can directly connect the outside devices,for example, tablet PC/TV/cellphones.8.It will close automatically after 30 mins if bluetooth mode no connection Product Feature:Bluetooth Version:V4.2Working Range:in 10metresDimension:75*75mm*161.6mmGross Weight:512gSpeaker Specifications: ��52MM*2Loudspeaker Output:4��/5W*2Frequency response: 120HZ-20KHZSignal-to-Noise:��90dBDistortion: ��0.5%Battery Voltage/Capacity:1200mAhBattery Charging Voltage:5V /500mAHPlay time values for speakers :3-4hoursPackaging List:1* Bluetooth Speaker 1* USB Charging Cable1* User Manual