Rebooted from last year's Spar speakers, the renamed Braven 625s ($180) and 650 ($190) are designed to be alternatives to the Jawbone Jambox, featuring what the company promises to be much-improved audio quality and new features. The rubber-clad 625s has a 1700mAh rechargeable battery with 16 hours of play time, and comes bundled with a water-resistant dry bag, wrist strap, and detachable USB flashlight so that it can be used outdoors and at night.…