Accurately Track Your Fitness through this FKANT Smart Watch. You can keep track of your heart and monitor your sleep through this watch, as it has Heart Rate & Sleep Monitoring feature integrated. Oxygen in the blood is essential if you want to be healthy and via this watch, you can check the oxygen levels whenever you desire, if it detects low oxygen levels then you can consult a doctor to take proper medical care. Its 1.69-inch color full touch screen is readable in sunlight as well, as it's 3 x brighter as compared to ordinary watches. Paring your smartphone with this watch is simple, it gets connected instantly through Bluetooth. It has customizable Faces as well. overall, this FKANT Smart Watch is the best.