This marine audio bundle pairs a 400-watt, Bluetooth-enabled 4-channel bridgeable amplifier with a set of 150-watt, IPX7 waterproof 6.5" dual cone speakers. The Pyle PLMRA410BT amplifier delivers versatile, wireless amplification with 2.1 Bluetooth for streaming music from smartphones and tablets within a 25+ foot range. Its marine-grade waterproof construction and dual MOSFET power supply provide reliable performance on the water. The included pair of white Pyle Hydra PLMR60W speakers complement the amplifier with their own waterproof build and polypropylene cones for full-range audio reproduction. Their low 2.48" mounting depth allows flexible installation while the standard 6.5" sizing guarantees wide compatibility. Together, the amplifier and speakers form a complete marine audio system with Bluetooth connectivity and 550 watts of total power.