Bluetooth calling: Phone call reminder??Support caller ID</br>Single Key: Short Click and Long Press Control</br>Special Feature: Light on Wrist Up</br>Health Tracker: Heart Rate Monitor?? Pedometer?? Calories Counter?? Distance?? Sleep Monitor</br>Other Functions: Alarm Alert?? Time Clock?? Anti-Lost?? Phone Finder</br></br>Product Description</br></br><b>Zomtop Fitness Tracker Pedometer Bracelet---A novelty and simple way to start with heart and health life.</b><br><br> Please read the manual before use.<br><br> About heart rate:If it is not accurate?? please check if there is a gap between the watch and the arm.<br><br> If you have any questions?? please contact us by email?? we will definitely help you to solve.<br><br> <b>Technical Specifications:</b><br> - Item Size: 4 * 1.9 * 1cm (