About this item Surprisingly bigger 360 sound: Ultimate Ears WONDERBOOM 2 is a wireless Bluetooth speaker with surprisingly bigger 360 degree sound and additional bass. New outdoor boost: push the outdoor boost button on this ultra portable speaker to instantly increase loudness and clarity for outdoor listening. 13 hr. Battery: powering 13 whopping hours of killer sound, The long lasting battery sees you through day trips, beach detours and biking adventures. Waterproof, dustproof floats: IP67 rating means it’s waterproof, dustproof and it floats! Use it in the pool, the beach or as a shower speaker. Double up, Now in stereo: pair two WONDERBOOM 2 speakers to party louder in mono or stereo mode. SUPER PORTABLE RUGGED: Sporting a convenient loo, dirt resistant and drop-proof — it’s ready for bikes, backpacks, and big adventures. Easy play/ pause/ skip: easily control your music right from the speaker, without having to reach for your phone. COMPATIBILITY: For audio playback, smartphones, tablets and other devices that support Bluetooth and Bluetooth Smart wireless audio profile [Advanced Audio Distribution Profile (A2DP)