Key Features & SpecificationsDesign: A minimalist, screenless tracking band featuring a zinc alloy shell paired with a comfortable nylon or fabric strap.Connectivity: Built with Bluetooth 5.3 / 5.4 for efficient syncing with your smartphone via a dedicated companion app (such as the Yesido Fit App on Google Play).Health & Fitness Tracking: Equipped with advanced sensors to monitor essential vitals 24/7, including heart rate, blood oxygen (SpO2), sleep quality, and specialized metrics like ECG monitoring depending on the specific variation.Battery Life: Highly energy-efficient due to the lack of a display, offering an impressive 20 to 30 days of standby time on a single charge.Durability: Rated for everyday exposure with IP68 / 1ATM water resistance, making it resilient against sweat, rain, and minor splashes.