It's fair to say that we weren't blown away by the Vivoactive smartwatch last year. But Garmin's recently announced Vivoactive HR feels a lot better. Functionally, it shares a lot with its predecessor. It has a similar low-res color touchscreen LCD and comfortable watchband, the same built-in GPS, the same week-long battery (Garmin says eight days in activity tracking mode). But it's all in a smaller, more attractive package.