Review on 🔊 Herdio Waterproof Marine Ceiling Speakers- 4 Inches, 160 Watts Power - Ideal for Kitchen, Bathroom, Boat, Car, RV & More - Cloth Surround, Low Profile Design - 1 Pair (White) by Harry Tulsa

I installed these speakers in the back of my pickup; because I think it would be great to share music with people in the back of a truck. The product efficiency is only 80% when the vehicle is not moving and music is playing; 90% of the noise disappears when driving fast (80 km/h); The speakers are very easy to install and 100% waterproof. During my use, the sound got a little loud after 2 months, but this is due to the possible use on a bumpy road.