We have covered plenty of awesome fitness trackers in the past. SmartBand 2 from Sony happens to be a smart wearable device with advanced heart rate tracking, allowing you to monitor your activity and figure out what makes you excited or stressed.
It lets you monitor your pulse and stress level and keep up with your calls and messages using vibrating alert and optional colored LEDs. The battery life lasts up to 5 days. SmartBand 2 is waterproof to 3 meters. More information is available here.