Bluetooth jobsite radio. Bluetooth connectivity, connect wirelessly to a mobile deice with a range of up to 10 m. USB port charges smart phones and selected tablet devices when plugged into AC power. AUX-in for playing audio from an external source. 2x large 89 mm diameter speakers provide high quality sound. Water and shock resistant IP64 rated. Dual power sources, AC or Makita Li-ion. Compatible with Makita li-ion batteries (7.2, 10.8, 12 maximum, 14.4 and 18 V).