New, unused Cardial smart ring. Reason for selling: Size is not suitable. Its size is (12). Specifications: Accurate monitoring of heart rate, oxygen, and heart rate variability 24/7. Analysis of sleep depth, hours, and wake stages to improve your comfort. Calculates steps, calories, and distance with weekly performance tracking. Tracks Fajr prayer completion, has a smart Tasbeeh counter, and determines Qibla direction. It has a small screen that displays the time and counter. Compatible with iOS and Android systems. Battery lasts up to 3-5 days, and the portable base gives you a total of 11 days. Water-resistant (IP68), lightweight. Its new price is (199﷼). Selling for (160﷼). This is the Cardial link.