It's a poor sleep tracker and I have a few to compare against, this one doesn't do a good job because it's just not accurate

Great Tracker

great fitness tracker.

I love this tracker.

Also, this tracker is rude

Definitely not as easy as other wrist trackers.

Love this tracker, HR monitor accurate, easily able to set interval training.

This tracker begs for action

This tracker is so bulky that I'm always banging it into things

This Tracker is like new at half the price, and guaranteed for a year