Smart Ring Fitness Tracker Size 13, Black A compact wearable that keeps essential activity and rest data on your finger. This Smart Ring combines step tracking, heart rate monitoring, and sleep analysis in a small, unobtrusive design. It connects to Android and iOS devices and requires no subscription fee. Key benefits Continuous activity tracking: Counts steps and tracks daily movement so you can measure progress without carrying a phone or wearing a bulky wrist device. Heart rate monitoring: Builtin heart rate sensor provides ongoing pulse data to help you understand exercise intensity and daily trends. Sleep monitoring: Records sleep patterns to show duration and basic sleep quality indicators so you can see how rest affects daily energy. Family care capability: Pair and manage rings for family members to keep activity and sleep insights organized in one place. No subscription fee: Use the companion app without recurring costs. What makes it stand out Ring form factor: Discreet, easy to wear all day and night for uninterrupted tracking. Crossplatform compatibility: Works with Android and iOS devices through the companion app. Ready out of the box: Size 13 and black finish provide a neutral, wearable fit for everyday use. Key specifications Primary functions: Step tracker, health tracker, sleep monitor, heart rate monitor Feature: Family care support Compatibility: Android and iOS Color: Black Size: 13 Subscription: No subscription fee required Practical use scenarios Daily activity tracking: Wear the ring while walking, commuting, or doing household tasks to automatically log steps and active time for daily goals. Sleep and recovery insight: Keep the ring on overnight to collect sleep duration and pattern data, then review trends in the app to adjust bedtime routines. Family activity management: Assign rings to family members and view summarized activity and sleep data in one account to monitor routines and encourage healthy habits. What you should know This device provides fitness and activity data for awareness and tracking. It is not a medical device and is not intended for medical diagnosis or treatment. Requires a compatible Android or iOS device and the companion app for setup and data review. Size 13 is fixed for this model; confirm sizing before . A straightforward ringbased tracker that offers step, heart rate, and sleep monitoring plus family care features, all without a subscription. Ideal for users seeking a lowprofile wearable that pairs with Android and iOS devices.