Samsung Galaxy Watch 4 40mm BT

Body Composition Analysis: It’s the first Samsung smartwatch to offer body composition analysis, providing insights into body fat percentage, skeletal muscle, and body water with a simple two-finger measurement in about 15 seconds.
Fitness Tracking: The Watch can track over 90 exercises automatically, monitor heart rate, count steps, and calculate calories burned. It also features Advanced Run Coaching and VO2 max readings to assess cardiovascular levels.
Health Monitoring: Beyond fitness, it monitors sleep patterns, including blood oxygen levels and snoring detection. Certain features like ECG (Electrocardiogram) and blood pressure monitoring are also available in select regions.
Wear OS Powered by Samsung:

This marks a significant shift in the Galaxy Watch’s operating system, offering access to popular Google apps and Galaxy services directly from the wrist.
Design and Durability: The Watch sports a simple and sleek design with a streamlined Armor Aluminum metal frame. It’s water-resistant up to 50 meters, making it suitable for swimming and other water-related activities (though not diving).
Connectivity: It includes Bluetooth 5.0, Wi-Fi, NFC, and GPS/Glonass/Beidou/Galileo for seamless connectivity and navigation.
Battery Life: The 40mm model has a 247 mAh battery, offering up to 40 hours of usage time with AOD off.