Ultra-thin Sleep & Fitness Tracker, Smart Ring for Women Men, Activity Trackers Fitness Ring with 24/7 Heart Rate Monitor, Step Counter, Calorie Pedometer, No Subscription, for iOS Android (Black #8) is up for auction in Electronics. The current bid is $9.50, 68% below the $29.99 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.