This is a great tracker to keep track of steps, sleep, heartrate, and more. It does show you who's calling and texting you. Overall, everything is great except one minor thing. Which is the battery life. It says 10 days after charging but I don't go half that. For me 3 days is the maximum I can go with a full charge. It's really not that big of a deal to me and you can see on the fitness tracker how low the battery is going. To charge the fitness tracker you take the band off and just plug it in your laptop's USB port and let it charge or plug it in your phone charger USB port and let it charge that way. I love are the steps, miles and calories. I do recommend the HOPPIC Fitness Tracker.