Pyle PWPBT60 Sound Box Splash Bluetooth Rugged and Splash-Proof Marine Grade Portable Wireless Speaker (Black) Built-in Bluetooth Technology - Stream Music Wirelessly - Works with Virtually any Bluetooth-Enabled Device (Smartphones, Tablets, PCs, MP3 Players, etc.) Marine-Grade IPX4 Splash-Proof & Shock-Resistant Design - Built-in Rechargeable Battery - Easy-Push Button Controls - Impressive Bass Output Battery Life: 6 Hours - Battery Type: Lithium 1400mA - Device Charges via USB cable (Included) - Dedicated Full-Range Stereo Speakers Metal Hook Loop for Easy Attachment to Chain, Wire, Karabiner, Clip, etc. Effectively Recreates Lows, Mids and Highs Frequency Response: 60 - 20,000Hz - Impedance: 4 Ohm - Dimensions (W x L x H): 2.5'' x 8.3'' x 2.7''