Product Model: Smart WatchMachine reference size: 44mm diameter: 44 * 38 * 10.7mmCase: alloyStrap: TPU materialCharging method :: USB chargingColor black, silver, local gold, rose goldMain screen: 1.54-inch HD IPS, 320 * 320Touch screen 2.5D arc surface capacitive touch screenBluetooth push: SMS, WeChat, QQ news and other client information and other timely remindersHeart rate detection: Heart rate monitoring, monitoring your heartbeat 24/7Pedometer, step counting, calorie consumption, exercise mileage record