Get fit in style with Fitbit Blazea smart fitness watch that helps you maximize every workout and every day. With advanced technology in a versatile design, this revolutionary device is built to track your workouts, monitor your performance stats, and gauge your progress. PurePulse continuous heart rate and multi-sport modes enhance every exercise, while next-generation features like Connected GPS and FitStar workouts on your wrist help you take your fitness to the next level. To download your size guide, simply open and save the pdf to your PC and follow the instructions on the document. Physical specification Size: small. Features Heart rate monitor. GPS.