Boombotix Boombot REX Wireless Ultraportable Weatherproof Bluetooth Speaker for iPods Smartphones Tablets and Laptops - REX Purple (Newest Version) Ruggedized High Impact ABS Housing: Built to withstand drops and tumbles. Rechargeable: The Boombot REX comes with a medical grade rechargeable battery that gives you at least eight hours of runtime. Water Resistant: Can be worn in the rain or used to shred snow. (non-submersed) Bluetooth: Wireless connectivity to all mobile devices. Integrated Siri/Voice Control: Pick up or reject your calls with the push of a button. Stay connected while doing what you love.