Neyya FR15NRTS Smart Ring with Bluetooth for iPhone, Mac and PC "Silver Sterling", Small, Titanium-Chrome Control your Presentations -Integrated with PowerPoint, Keynote and Prezi, 60 seconds setup. Present your ideas with a Tap and Swipe. Capture Selfies -iOS Camera ready, Capture Front/Back photos and videos. GoPro -Full GoPro Hero controls, Videos and Photos. Instant Setup. Water tolerant and shock proof. ROKU - NETFLIX & HULU ready. Control movies, select channels / videos conveniently. Notifications - Accept / Reject calls, Priority notifications, VIP Lists for Calls / Messages Reminders -Pill Reminder, Yoga / Workout Timer, Daily Reminder for water and posture Power - 3 days Easy use, 10 Days standby and charge wirelessly in 90 minutes. The magic of single charge equals, average use of 1000 Slides for presentation 500 calls and messages 1500 songs and video rolls 120 selfies and GoPro shots