[JB-5001] JBH WIRELESS SPEAKER.    Bass Boosting Sound    Connect DC5V adaptor plug into socket DC5V at the side of this unit for recharging  Play MP3 format music from memory car, FM function  FM frequency response: 87.5-108mhZ  Connect 3.5 stereo audio cable to socket of LINE IN you can play music sources from mobile phone.MP3. MP4. PC and other audio devices.  Backward /V-: Long Press: Vol-, Short press: backward, under FM mode, Short press: Stations election backward long press, Forward Audio.  Searching: Forward/V+: Long press: Vol+/Short press: forward: under FM mode: Short press: station section forward ling press: Forward Auto.  Searching: Pause/play: press key MODE of the control panel can LINE FM and MP3  FUNCTION:    Sealed woody speaker box stylist panel  High capacity lithium Battery  With memory Card / USB / BT / FM Radio  With main volume adjusting.  With BT function.  Built-in 18650 Battery  TECHNICAL SPECIFICATION:    Output power:5w  Loud Speaker :3 " 3Ω  Battery capacity:1200mA  Play time:2-3h  Box size: 12.3x9.2x16cm