Hw12 Smartwatch is a new model in Smartwatch. You can lock the watch with the help of passcode. It has side button know. working.HW12 is another new Bluetooth call smartwatch available out in the markets at a low price. it is a sporty. smartwatch with a stylish design and equipped with plenty of fitness tracker features such as a heart rate monitor. a Blood oxygen monitor Bluetooth 5.2, IP68 waterproof, and more.