What stands out: IPX6 water-resistance rating allows the sub to withstand jets and spraying water (but not continuous submersion) The non-resonant cast-aluminum housing maximizes the performance of the high-excursion 8" sub Water-resistant covers and connectors enable use in marine or other watery conditions This sub can accept low-level or speaker-level signals, so it'll drop into almost any system Alpine includes a remote control with a 15-foot cable, so you can adjust the bass from the dash or cockpit Keep in mind: This sub does not include wiring, so you'll need to purchase a 10-gauge wiring kit You'll need to wire this sub to your battery Measure the intended installation spot for fit — dimensions are 13.4"W x 2.875"H x 9.062"D If you use the sub's line level inputs, you'll also need an 18-gauge remote turn-on lead