Surprisingly Bigger 360-Degree Sound: The WONDERBOOM 4 portable waterproof Bluetooth speaker features bigger 360-degree sound in a petite package; boosted sound for up to 14 hours of playtime : Outdoor Boost and Podcast Mode: Engineered for full stereo sound; tap the Outdoor Boost button for outdoor environments; use the new Podcast Mode to make vocals sound rich and clear 14 Hours of Boom: With a battery that lasts throughout the day, this waterproof portable speaker booms on with up to 14 hours of playtime, so you can soak up every moment Waterproof, Dustproof, and Floatable: IP67-rated this Bluetooth waterproof speaker can be submerged in 1m of water for 30 min; protected from dust; ideal for the pool, beach, or shower Double Up for Stereo: Pair up two WONDERBOOM 4 portable Bluetooth speakers for even bigger sound; press once to double up; press again for true stereo from both speakers, with left and right channels Durable Wireless Speaker With Range: 131 feet (40 meters) of range so you’re free to roam; plus it’s dirt-resistant and drop-proof (1) with a handy loop so you can take it with you Made With Recycled Plastic: Plastic parts in the WONDERBOOM 4 wireless Bluetooth speaker include a minimum of 31% post-consumer recycled plastic by weight (1) Drop-tested from 5 ft / 1.5 m