The Green Lion Fit Flex Smart Fitness Band is an ultra-lightweight, high-performance health tracking bracelet crafted with a breathable, comfortable Nylon strap. Powered by the reliable JL7073 chipset and advanced Bluetooth V5.4 BLE connectivity, it ensures seamless pairing with iOS 9.0+ and Android 5.1+ devices. Equipped with a premium HX3697 heart rate sensor featuring 4 PD sensors and a high-precision ST LIS2DOC motion sensor, this band delivers robust 24/7 health monitoring. It effortlessly tracks your heart rate, body temperature, stress levels, SpO2 blood oxygen, and sleep quality, while offering advanced HRV analysis and high-precision PPG metrics. Designed for active lifestyles, its 5ATM waterproof rating guarantees durable protection during swimming or intense workouts. The efficient 120mAh battery charges fully in just 1.5 hours via its magnetic port, offering a remarkable 10-day working time and 30 days of standby. Stay motivated and connected with smart vibrant alerts and fun family and friends ranking features.