Size:18 Compatible with:Smartphone Features:Camera, Calorie Tracker Included components:Smart Ring, USB Cable, User Manual Package Dimensions:9 x 9 x 5 cm; 75 g Experience a diverse range of indoor and outdoor activities through the smart ring application. Simply wear the ring to effortlessly track steps, distance, calories, and pace. Analyze map routes and detailed exercise data to enhance your performance and push beyond your limits. NFC Functionality: This smart health ring incorporates premium technology for precise data monitoring and smart manufacturing. With built in NFC, it can be used as an NFC card, automatic link sender, and quick WIFI and Bluetooth connection. Not only is it intelligent, but it also boasts a simple and elegant design, making it incredibly fashionable. Comprehensive Sleep Analysis: By analyzing sleep efficiency, latency, time, stages, movements, and temperature, this ring provides a comprehensive understanding of sleep behavior and body condition. The sleep tracking feature makes it an ideal health companion. Boost Your Fitness: Experience a diverse range of indoor and outdoor activities through the smart ring application. Simply wear the ring to effortlessly track steps, distance, calories, and pace. Analyze map routes and detailed exercise data to enhance your performance and push beyond your limits. Smartphone Camera Remote Control: The ring doubles as a remote shutter release, allowing you to take selfies or group photos without needing assistance. Even when you're alone, you can record perfect shots with ease. It can also be used for video scrolling, electric book page flipping, and music control. All Day Monitoring: This smart ring utilizes energy saving technology to ensure continuous monitoring for 3 to 5 days without the need for charging. Made with polished aluminum alloy for durability and medical grade 316L stainless steel for comfort, it is also waterproof with an IP68 rating to guarantee longevity. NFC Functionality: This smart health ring incorporates premium technology for precise data monitoring and smart manufacturing. With built in NFC, it can be used as an NFC card, automatic link sender, and quick WIFI and Bluetooth connection. Not only is it intelligent, but it also boasts a simple and elegant design, making it incredibly fashionable. Comprehensive Sleep Analysis: By analyzing sleep efficiency, latency, time, stages, movements, and temperature, this ring provides a comprehensive understanding of sleep behavior and body condition. The sleep tracking feature makes it an ideal health companion. Boost Your Fitness: Experience a diverse range of indoor and outdoor activities through the smart ring application. Simply wear the ring to effortlessly track steps, distance, calories, and pace. Analyze map routes and detailed exercise data to enhance your performance and push beyond your limits. Smartphone Camera Remote Control: The ring doubles as a remote shutter release, allowing you to take selfies or group photos without needing assistance. Even when you're alone, you can record perfect shots with ease. It can also be used for video scrolling, electric book page flipping, and music control. All Day Monitoring: This smart ring utilizes energy saving technology to ensure continuous monitoring for 3 to 5 days without the need for charging. Made with polished aluminum alloy for durability and medical grade 316L stainless steel for comfort, it is also waterproof with an IP68 rating to guarantee longevity.