The new EcoBoulder by EcoxGear is a waterproof boom box for boats that lack built-in sound systems.
It integrates Bluetooth connectivity, an AM/FM radio and a PA system with 100 watts of power, an 8-inch speaker, a 3-inch tweeter and an 8-inch passive woofer. It is fully submersible, dirt- and dust-proof, and buoyant. Play time is 10 hours on the lithium-ion battery, which charges in 2½ hours. $250. Grace Digital, Poway, California, (866) 446-0961. ecoxgear.com
This article originally appeared in the November 2016 issue.