Page 20: Updating Fitbit Charge Hr. Fitbit Connect or the Fitbit app. We recommend keeping your Charge HR up to date. Updating your Charge HR takes several minutes and is demanding on the battery. We recommend that you charge your Charge HR before updating or while the update is in progress. Page 21: Restarting Your Charge Hr MIO Alpha 2 Review - Optical Heart Rate Monitor with Watch Display the5krunner / July 4, 2015 MIO first came to more widespread prominence with their MIO Link optical wrist band. Mio creates strapless EKG accurate heart rate monitor watches and activity fitness trackers to help you improve your performance and health. This video was sponsored by COROS and the SafeSound Helmet was provided to RIZKNOWS free of charge. The rest of the products in this video were purchased by RIZKNOWS. Fitbit Charge 2 vs. Alta Alta HR auto-detects workouts like running, elliptical, biking and more, and logs them to your dashboard. Learn more. Battery Up to 7 Days A single charge gives you up to 7 days of battery life—so you can plug in less, and move more. 2. Get a better night's sleep. Fitbit apps ranked compatibility with the Mio GO and PAI apps; What the Alpha 2 has vs. the Alpha: One of the biggest differences between the two watches is that the Alpha 2 is waterproof up to 30m. For swimmers, this is a game changer. Normally they'd have to rely on fitness trackers alone to be waterproof, but now the Alpha 2 wraps everything into one watch. Buy Mio FUSE Heart Rate, Sleep + Activity Tracker: Clips, heart rate tracking. Fitbit Charge HR does not do well with spikes, on either arm. In fact, the display would often display "- -" and not find a suitable rate for at least 30 seconds. Mio Alpha 2 Heart Rate Watch + Activity The addition of an all-day heart-rate monitor makes the Fitbit Charge HR the best all-around fitness tracker for the price. Fitbit Charge HR Review. by Mike The Mio Alpha 2 is Your Heart View and Download Mio Alpha 2 complete use