Ultimate Ears Wonderboom 4 Portable Bluetooth Speaker (Sand Beige) LimitedStock Please refer to their battery

Please refer to their battery type

Up to 60 hours of continuous use on a full charge and up to 3 hours on a 10-minute rapid charge (via USB-C connection)

The only true sonic technology

The Cast Introduce the Villains in 'Wild Blue Yonder'

Ultimate Ears Wonderboom 4 Portable Bluetooth Speaker (Sand Beige) LimitedStock Please refer to their batteryOverview Ultraportable Bluetooth speaker with a surprisingly bigger 360 sound. Its crisp, bassy, and ready to go with 14 hours of boom. The IP67 rating means its waterproof, dustproof, and floats. Take it to the pool, the beach, or even the shower. Its amazing sound, no matter where you take it. Key Features Surprisingly Bigger 360 Degree Sound The WONDERBOOM 4 portable waterproof Bluetooth speaker features bigger 360 degree sound in a petite package;