The latest Jambox-sized portable Bluetooth speaker to make it into our office comes from Ecoxgear. Ecoxbt ($130) is a ruggedized take on the increasingly popular "handheld wireless speaker" style, with a heavy emphasis placed on the fact that it's waterproof. Not only can it stand up to splashes, it's actually submersible and can float. Speakerphone functionality is packed in, as well, and the rechargeable battery is rated at 10 hours.
