About This

APP supports languages: English, French, German, Italian, Russian, Portugal, Turkish, Hungarian, Dutch, Danish, Greek, Spanish, Polish, Finnish, Czech, Croatian, Swedish, Hebrew, Persian, Arabic, Simplified Chinese, Traditional Chinese, Japanese, Korean, Thai, Vietnamese, Malaysia, Indonesian, Hindi
ZERO Subscription, Free APP: Enjoy full access to all smart features – no monthly fees, no hidden costs. Our app is free forever, directly paired with your physical ring. No membership tiers, no annual commitments.
Main Function Parameter: Heart rate monitoring, Blood oxygen monitoring, Pressure measurement, HRV Lorenz scatter plot, Step counting Exercise, Remote care, 24/7 scientific sleep, Photo taking, Blood components, Dynamic heart rate measurement, Blood oxygen saturation measurement, Pedometer/calorie expenditure, Surface temperature detection, Offline data recording
System requirements: Android 8.0 and higher versions; IOS13.0 and higher Charging method: Magnetic suction charging Battery life duration: Around 1 week Charging time: 1.0 hour Bluetooth distance: 3-5 meters
Product material: Epoxy resin, metal Ring weight: 3 - 5 grams Battery: Lithium Polymer Battery Communication method: Bluetooth Waterproof Level: IP68

Overview

Operating System : Android, iOS
Special Feature : Controlling photography, video switching, Finger temperature tracker, Fitness tracking, Sleep Monitor, Stress tracking Controlling photography, video switching, Finger temperature tracker, Fitness tracking, Sleep Monitor, Stress tracking
Connectivity Technology : Bluetooth
Wireless Communication Standard : Bluetooth
Battery Cell Composition : Lithium Polymer
GPS : GPS Via Smartphone
Shape : Round
Brand : JKLY
Model Name : R20
Style : Modern

Keep your tech gear in good condition with basic care: wipe down
with a soft, dry cloth and avoid exposing electronics to extreme
heat, moisture, or direct sunlight for extended periods. If your
item includes a specific care label or instructions, please follow
those first. For items with batteries or charging components, use
only the cables and chargers included or recommended for that
product.

Product dimensions, compatible devices, and technical specifications
are listed in the images and description above. Please check these
details carefully before purchasing, especially for cases, cables,
and mounts designed for specific device models. If you're unsure
whether an item fits your device, feel free to contact us before
ordering.