Feel the bass on this rugged, shock proof, water resistant Bluetooth speaker. The Turtle Shell 2.0 Bluetooth speaker will give you the best wireless audio you can get. Behold the Turtle Shell 2.0, Outdoor Tech's most miraculous rugged, water resistant Bluetooth Speaker to date. We wouldn't say something as clishe as "The best just got better"... it did though. Based off the popular original Turtle Shell, the 2.0 brings more volume, more Hi-Fi audio, more battery life and a plethora of other feature improvements over its predecessor. Most speakers look like a shoe box with pin holes in it.