The DEWALT DWST1-81079 TSTAK Radio also doubles up as an XR/FlexVolt battery charger. It offers FM, AM and DAB+, with a 45 Watt output. Fully compatible with the TSTAK system, incorporating the usual stacking latches. It also incorporates shock absorbing rubber bumpers on all 4 corners for tough on site protection. This heavy-duty site radio has 2 mid range speakers on the front, 2 more mid range speakers on the back as well as 2 powerful sub-woofers on the bottom, this combination provides excellent sound quality. The radio can be controlled remotely via your Android or Apple device using the DEWALT Mobile App, allowing for complete control of the device on site, and with BLE (Bluetooth Low Energy), you stay connected without sacrificing your battery. Comes as a Bare Unit, NO Battery or Charger supplied. Specification Input Power Battery 18-54V Li-ion, DC 230/240V