This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90 day warranty. PORTABLE MUSIC POWER: The Turtle Shell 3.0 is 20% louder than before and brings you 360 degree sound. FLOATING SPEAKER: Beyond being waterproof, the Turtle Shell is designed to float and keep on playing. DAISY-CHAIN FUNCTION: When you really want to rock the outdoors, link two Turtle Shell 3.0 speakers to get maximum volume and sound. 100% SATISFACTION GUARANTEE: If you're unhappy with your Outdoor Tech Turtle Shell 3.0, return it for a full refund..