We are an authorized Boss dealer These Boss MR60B marine speakers are great for taking your favorite music out onto the water. They offer a 200 Watt Max and an impedance of 4 Ohm. Their frequency response of 80Hz 20kHz makes sure you hear your music the way it was intended to be heard, and they come with plastic grills to make sure they stay safe out on the water. Great for cars, ATV's, UTV's, snow mobiles, boats, golf carts, coolers and for many other applications.