Amazon.com: Jacoosa Smart Watch for Men Women, 1000mAh 。The Jacoosa HD Smart Watch is a sleek and versatile device perfect for both men and women. With a black silicone band and case, it offers a stylish look while being equipped with essential features like a fitness tracker, sleep monitor, heart rate monitoring, and 24-hour health monitoring. The smart watch also has the capability to make and receive calls, making it a convenient and functional accessory for everyday use. Compatible with iOS and Android operating systems, this smart watch provides a comprehensive health tracking experience with a manufacturer warranty of 1 year.