COLMI R2 Smart Ring – Titanium Version Health, Fitness & Sleep Monitor, Unisex This is Jim from Jim’s garage, not only do I grow orchid cactus but I am a complete Tech Nerd & collector of Techie gadgets. I’ve been reviewing smart rings lately and this is the one I use, great software, easy setup & durable. They track your steps, calories & distance traveled, workouts, blood oxygen levels, stress levels and sleep habits. They bind to your cell phone (Android (5.1+) or iOS (8.0+) using Qring software, available on Google play or the Apple App store and will store your exercise info for up to a week. Once you connect with your phone everything is stored in the app and charted for your review. The app is quick with NO in app sales or ads and you DON’T have to create accounts or log in / no passwords. The R2 has a Titanium shell for extreme durability, looks wise, it’s everything you would expect from a nice gold or black ring. The included USB charge cable is the magnetic type and works very well. I have checked these to a traditional Pedometer and out of 10,000 steps these are always over by 50-60 steps, very accurate. Please use our sizing chart pics to find your size Fast & Free Shipping from California Free 30 day returns Pay me securely with any major credit card through paypal! Terms: We accept Paypal. Sales tax will be charged on all sales delivered in California. Shipping: We ship USPS. We post feedback on all transactions. Thank Ye Kindly Leia Mais