Ultra-light design and durable material - Weight: 4.7 g, stainless steel construction that is durable and fade-resistant. The ultra-light form stays out of the way during workouts, helping you focus and perform better. It also looks beautiful and elegant as a daily accessory. Heart rate and sleep tracking - Real-time heart rate monitoring to understand your intensity and heart rate trends. - Sleep tracking identifies wake time, deep sleep, and light sleep to support better sleep habits. Fitness and activity tracking - Multiple sport modes including walking, running, fitness, hiking, swimming and more. - Auto-detects your sport and records daily activity data such as steps and calories burned. What’s included - Smart ring x1 - English user manual x1 - Charging cable x1 Gift-ready and versatile - IP68 waterproof for daily wear and aquatic use. - Available in gold, silver and black. - Comes with exquisite gift boxes, making it a suitable gift for Christmas, birthdays, Valentine's Day, Children’s Day or other occasions. Use scenarios - During training or workouts, the ring remains unobtrusive while monitoring heart rate and calories to help optimize performance. - At night, sleep tracking supports healthier routines by revealing sleep stages. - Everyday wear for swimming, hiking or daily activities, thanks to IP68 protection and durable stainless steel.