The Makita DMR301 Job Site Speaker/Stereo runs on both an AC adaptor and Makita LXT or CXT Li-ion batteries. When connected to the mains, you can charger LXT/CXT Li-ion batteries. A LCD screen indicates battery charging status; Charging, Charging completed, Standing-by for charging, Charging error; indicates battery reach at 80% charge. 
Equipped with Bluetooth® (Class 2), allowing for a wireless connection to your mobile device for playing music with a range of up to 10m. Its digital tuner is capable of receiving DAB/DAB+ radio stations. There is also an AUX-IN jack for connecting to external audio source (the connecting cable is not included.)
IP64 rated dust and shower-proof construction. Elastomer bumpers and metal pipes protect against rough handling.
Other features include: two USB output ports for charging mobile devices, illuminated control buttons and dial for improved visibility and a built-in bottle opener: Conveniently located for opening glass bottles.
Compatible with LXT and CXT batteries (12Vmax-18V) only.

Comes as a Bare Unit, No Battery or Charger.

Specifications:

Frequency Range FM 87.5-108 MHz, DABB and III 5A-13F.
Battery: Type Lithium-ion, Range 12Vmax-18V.
Speakers: 2 x Ø89mm.
Weight: 5.9kg.