FeaturesHigh performance audio system with dual speakers and passive radiators delivers loud, clear sound with deep accurate bassDurable portable, stackable design features shock absorbing end caps and metal speaker grills that protect from drops and other harmful jobsite conditionsBest-in-class receptions accuracy and signal qualityIntegrated handles allow for easy transport and storage in a wide range of environmentsDigital AM/FM tuner with 10-station presetsCustomizable EQ (equalizer)Weather sealed auxiliary compartment2.1 A USB charger for all portable electronic devices3.5 mm aux in port for wired playbackPowered by all M18â„¢ batteries or A/C outlet (battery not included) with up to 12 hr runtime with an M18â„¢ 5 Ah batteryUp to 12 hr runtime with an M18â„¢ 5 Ah battery