The Striiv Fusion Bio 2 showcases continuous heart rate tracking, even while exercising, and sleeping. With over 50,000 heart rate samples per day, find deeper insights into your resting and active heart rate throughout the day. Beyond standard activity and sleep tracking, Bio 2 includes smartwatch alerts for Caller ID, text messages, and all your favorite apps without the bulk of a smartwatch. Never miss an important call, text, or a meeting again. With Bio 2’s touchscreen, log your diet, weight, and hydration without ever taking out your phone. Sticking to healthy habits has never been easier.