Makita XRM04B 18V LXT Lithium-Ion Cordless Bluetooth Job Site Radio, Tool Only Equipped with Bluetooth to wirelessly connect your mobile device to play music Menu controls to set FM mono/stereo, clock settings, volume and snooze Runs up to 20 hours with an 18V LXT Lithium-Ion 5.0Ah battery and 6 hours with an 18V Compact Lithium-Ion 2.0Ah battery Protective bumpers are engineered for increased durability One auxiliary port for MP3 compatibility and one USB port for charging your mobile device. When connecting with Bluetooth, the user must ensure the volume is turned up on their phone and not muted. This will allow for volume adjustment on the radio itself. Please refer the User Manual & the Video before use.