New Zealot S2 Portable Bluetooth Speaker Wireless Music Player tf card/USB Flash Drive FM radio Strong Bass Stereo with Mic;. Indeed zealot have come again with a thought provoking mini bluetooth speaker which really gives the feeling of a high grade woofer system. it is in every aspect the ideal speaker for every advanture as it is so portable that you do not feel it as so heavy to move around with, but again it will always give you that super bass which is always demanded of a good sound system that whatever the lyrics of the music your are listening to whether on a yatch or anywhere you are able to hear and understand them clearly and enjoy the music under a great sound bass system. zealot have come with this sound system that wherever you have stored your music you can still with great convinience stream them alive, whether on your TF CARD, FLASH DRIVE OR on your devices inbuilt memory your are enjoying your music as this device comes with bluetooth,MP3,WMA audio format. Output Voltage 5V/1A Speaker 4Ω3W Transmission distance 10m Frequency response 20Hz-20KHz Output power 6W Operating voltage 3.7V Distortion 1% Weight 500g Dimension 218*65*70mm And zealot having known the need that sometimes one desires to know what is happening in the world outside ones' home or place has included fm radio to the many functions of this device. this device once connected to your phone you begin to play your music on the device immediately without having to touch your phone again.as it is always the nature of zealot to produce world class devices we have come again with this and with this added fun ctions.............. After speakers connect to mobile phone via Bluetooth,click the speaker middle button,then you can play phone music.When accessing the phone,you can use speaker to realize the calling function,and also continue to play music after hanging up. this is really a good buy from zealot if ever you did.