ULTIMATE EARS WONDERBOOM 2 Portable Bluetooth Speaker Color: Gray Brand new in sealed box. Ultimate Ears WONDERBOOM 2 is a super portable speaker that rocks a surprisingly big sound — anywhere. Heading outside? Hit the all-new Outdoor Boost for louder, crisper audio that’s specially tuned for outdoor listening. With 13 hours of battery life, it’ll rage ‘till dawn. It’s got a rating of IP67, so it’s super waterproof. And dustproof. And it floats. Plus, you can wirelessly pair two WONDERBOOM 2 speakers to double the sound or enjoy true stereo. It’s your shower buddy, your beach volleyball captain, and the “big splash” at your next pool party. Dimensions (Overall): 4.09 Inches (H) x 3.75 Inches (W) x 3.75 Inches (D) Electronics Features: USB Chargeable, Wireless, Waterproof Operating System Compatibility: Apple iOS, Android Connection Types: USB Wireless Technology: Bluetooth IP rating: IP67 Maximum Battery Charge Life: 13 Hours Battery: 1 Non-Universal Lithium Ion, Required, Included