Smart Watch GW20 Bluetooth Call Fitness Tracker is compatible with Samsung, Google, and iPhones. It connects via Bluetooth. It has a 1.3'' HD display with a full touchscreen interface and crackproof glass. The watch accurately monitors steps, heart rate, distance covered, burned calories, stress, blood pressure, and sleep. It allows easy Bluetooth calls anywhere on the go and gives important reminders. The watch's battery works on an intelligent optimization algorithm. Its battery life is 1-2 days. You can easily access your smartphone's features like calls, music, texts, and notifications. It offers 24x7 high-precision heart rate monitoring.