Z66 Ultra Smart Watch

The Z66 Ultra Smart Watch is a sporty smartwatch that got a square design with a 1.93-inch large IPS screen and is equipped with several features including a heart rate monitor, SPO2 blood oxygen monitor, Sleep monitor and Multisport modes. On the plus side, it even supports Bluetooth calling. With a 200 mAh battery capacity with 2-5 days of normal usage and 7 days of standby time, you are guaranteed smooth and prolonged use.