Waterproof and wireless, this puts the loud in loudspeaker. Bumping 36 watts of compact, bass-heavy power through four separate drivers, you can attach it almost anything with the bungee strap and carabiner — and it's shockproof, so it can take a beating. Wirelessly pair two of these for up to 12 hours of crisp stereo sound. And bonus: this speaker will serve as an emergency power bank for any USB-equipped electronics in a pinch. Talk about double duty.

• (L) 9.5" x (W) 2.8' x (H) 4.1"
• 12 hour play time, 3 hour charge time
• 36 watts of power, 4 built-in speaker drivers
• IPX7 waterproof and shockproof
• Built-in power bank output USB 5V 2.1A
• Includes bungee strap, carabiner, lanyard, charging cable, aux cable, and stow bag
• Bluetooth compatible, USB rechargeable battery, headphone jack