Product Overview

The JCRing J2301B is a clinically validated smart health ring developed by Youhong Medical (J-Stylelife). Worn like a simple ring, it continuously and non-invasively monitors key health metrics, helping users track blood glucose risk, cardiovascular health and sleep quality anytime, anywhere — no finger pricking, no bulky devices.

Non-Invasive Blood Glucose (BGEM™ AI System)

• BGEM™ AI engine — an AI algorithm combined with high-performance built-in sensors continuously collects vital-sign data and comprehensively evaluates/predicts diabetes risk.
• Clinically validated — BGEM™ has completed Phase 1 clinical validation with 83% accuracy.
• No finger pricking — measure blood glucose risk easily, anytime, without lancets or test strips.
• Risk Assessment Card — shows your diabetes risk index (Low / High) and stores all historical results in your account.
• PPG sensing — green LED + photodetector capture raw pulse-wave amplitude at the radial artery for precise readings.

24/7 Automatic Health Monitoring

• 7×24 real-time heart rate monitoring with adjustable auto-measurement interval and manual spot checks in the app
• Blood oxygen (SpO₂) saturation monitoring
• Body temperature trend monitoring (daily/weekly/monthly trend reports)
• HRV (heart rate variability) monitoring
• Stress monitoring with recovery index and stress response
• Blood pressure monitoring
• Female health — menstrual cycle and pregnancy tracking reminders
• VO₂Max (max oxygen uptake) with fitness age, e.g. 48.6 ml/kg/min
• PAI vitality index — professional daily health report

Sleep Monitoring

• Automatic, contactless sleep tracking once you fall asleep
• Detailed sleep stages: nap, awake, REM, light sleep, deep sleep
• Sleep metrics: total sleep time, time in bed, sleep efficiency, time to fall asleep, and sleep score
• Average sleeping heart rate and SpO₂ for overnight cardiac health
• Sleep quality report with summary and personalised recommendations
• Custom sleep goals to build better sleep habits

Sports & Activity

• 54 sports modes recording heart rate, steps, distance and calories
• All-day step, distance and calorie tracking with daily/weekly/monthly activity reports
• Personalised goal setting to track your daily achievement

Design & Hardware

• Material: 316 stainless steel (standard) / pure titanium (premium)
• Ergonomic curved design — medical-grade metal shell, lightweight, wear-resistant and corrosion-resistant; inner ring is skin-friendly and anti-allergic
• Dimensions: 8.0 mm width, 2.85 / 2.9 mm thickness
• Waterproof: 5ATM (dive-rated to 50 m underwater)
• Sensors: ultra-small PPG sensor chip (IR / red / green LED), skin temperature sensor, 3D accelerometer
• Connectivity: Bluetooth 5.0 ultra-low-power SoC, Bluetooth OTA firmware update
• Battery: rechargeable Li-polymer 14.5–21.5 mAh (varies by ring size); up to 7 days with 24-hour health monitoring on; wireless charging
• Data storage: 15 days on-device
• App: JCRing app for Android 5.0+ / iOS 10.0+; syncs with Apple Health and Google Fit
• Colours: black, silver, rose gold, gold
• Sizes: 8 ring sizes, US #6–#13

In the Box

Smart ring • Wireless charging case • Type-C charging cable • Gift box • User manual

Why Choose JCRing J2301B

• Clinical-grade high-precision sensors with core patented algorithm
• Fingertip-position sensing delivers more accurate data
• Disruptive, fashionable wearable form — multi-dimensional health monitoring in a ring
• Early screening and prevention to reduce diabetes risk

Contact us for OEM/ODM cooperation, bulk pricing and samples. Custom colours, logos and packaging are available.