Sony SRS-XB12 Wireless Extra Bass Bluetooth Speaker with 16 Hours Battery Life, Waterproof, Dustproof, Rustproof…

Long Battery Life : Battery life up to 16 hours for long listening hours. Frequency Range 2.4 GHz
Extra Bass : Get things going with EXTRA BASS. A passive radiator works with the mono speaker to enhance low-end tones, giving bass a boost despite the compact size
Totally waterproof : With an IP67 rating, the speaker can survive being dropped in water, so the odd rain shower or accidental spillage won’t pose any problems.