Sony SRS-XB12 Extra Bass Portable Waterproof Wireless Speaker (Violet)

Frequency Response

2E+4 Hz

Connectivity Technology

Bluetooth

Audio Output Mode

Stereo

Input Voltage

5 Volts

Don't worry about sand and water when you're chilling at the beach. Even if you drop the speaker in the pool, it'll still blast out your music (just fish it out first).