Great Fitness Tracker-
I bought this for my son and he loves it. It allows him to receive calls, get SMS, SNS, calendar alerts, Facebook, Instagram, WhatsApp, LinkedIn and Twitter Reminders and updates.
It's water resistant as well as compatible with all Bluetooth 4.0 or later smartphones, iOS devices at 7.1 or later/and all Android 4.4 or later devices.
It also keep track of his steps, calories burned, sleep duration and consistency. In addition, it has a built-in USB plug to make for charging easier.