The Green Lion Tech Master Smart Watch – Black is a modern, stylish smartwatch that blends everyday practicality with useful smart features. It has a 1.43″ AMOLED display with 466×466 resolution, giving clear visuals and smooth touch interaction. Powered by a 400 mAh battery, it typically lasts about 3–5 days per charge and up to ~10 days on standby. The watch connects to your phone using Bluetooth 3.0 + BLE 5.3 to show call, message, and app notifications, and also supports Bluetooth calling and NFC functions. It’s built with a durable aluminum body and IP67 water resistance, making it suitable for daily wear and light exposure to water. For health and activity tracking, it includes features like heart rate monitoring, blood oxygen tracking, sports modes, and built-in navigation support, and is compatible with both Android (5.0+) and iOS (9.0+) devices.