Oura Ring 4 – Ceramic Midnight – Size 10 (Smart Ring, Sleep, Heart Rate & Fitness Tracking, iOS/Android)

Overview Track your wellbeing discreetly and accurately with the Oura Ring 4 (Ceramic Midnight, Size 10) — a premium smart ring designed for advanced sleep analysis, heart rate monitoring and daily fitness tracking . Built for 24/7 wear, Oura delivers meaningful insights into your recovery, readiness and overall health using powerful sensors and intelligent data tracking. Finished in a stylish Ceramic Midnight colourway, it combines luxury design with cutting-edge performance, featuring up to 8 days of battery life and seamless compatibility with iOS and Android devices. Please note: Oura rings use a non-standard fit — sizing must be confirmed using the Oura Ring 4 Size Kit before purchase. Key Features Advanced sleep tracking with deep analysis of sleep stages and recovery Heart rate monitoring including resting HR and overnight trends Fitness and activity tracking with daily movement insights Readiness & recovery scoring to help optimise training and rest Premium ceramic build in an elegant Midnight finish Non-standard ring sizing – sizing requires Oura Ring 4 Size Kit Up to 8-day battery life (usage dependent) iOS & Android compatible with Bluetooth sync to the Oura app Lightweight, comfortable design suitable for 24/7 wearable use Benefits Improve wellbeing with data-driven insights into sleep quality and recovery Make smarter lifestyle decisions using readiness and activity trends Wear it all day discreetly as a smart tracker without bulky watches Track long-term progress with app analytics and personalised reporting Enjoy premium comfort and durability with the ceramic ring finish Reliable performance throughout the week thanks to long battery life Specifications Table Specification Details Brand Oura Model Oura Ring 4 Colour / Finish Ceramic Midnight Size 10 Fit Type Non-standard sizing (Size Kit required) Wearable Type Smart Ring Tracking Sleep, Heart Rate, Fitness / Activity Battery Life Up to 8 days (usage dependent) Compatibility iOS / Android Connectivity Bluetooth Sensors Health & biometric sensors (model-dependent) Usage 24/7 wellness tracking ...