COLMI RING 2 Smart Ring, Size 12, Black – Health & Fitness Tracker with Heart Rate, SpO2, Sleep & Stress Monitoring, IP68 Waterproof, 7-Day Battery

Imagine slipping on a sleek black ring that quietly tracks your heart rate, blood oxygen, sleep quality, and stress levels while you go about your day—whether you're in the office, at the gym, or sleeping. The COLMI RING 2 in size 12 is a discreet wearable that combines advanced health monitoring with everyday convenience, all in a durable stainless steel and PC build.

Key specifications

• Ring size: US 12 (inner diameter 21.49 mm)
• Color: Black
• Material: Stainless steel and PC
• Connectivity: Bluetooth 5.0
• Health monitoring: Heart rate, blood oxygen (SpO2), sleep, body temperature, stress, HRV
• Activity tracking: Steps, calories burned, distance, sedentary reminder
• Water resistance: IP68 (waterproof)
• Battery: 18 mAh, up to 7 days typical use, magnetic charging (approx. 1.5 hours)
• Compatibility: Android 5.0+ and iOS 9.0+ via Qring app
• Alerts: Vibration for notifications and alarms

Why choose it

This smart ring offers comprehensive health insights without the bulk of a smartwatch. It's perfect for those who want continuous monitoring of vital signs, sleep patterns, and fitness metrics in a lightweight, stylish form factor. The IP68 rating means you can wear it while washing hands or in the rain, and the 7-day battery life reduces charging hassles.

Ideal use cases

• Daily health tracking for fitness enthusiasts and health-conscious individuals
• Sleep monitoring to improve rest quality and understand sleep cycles
• Stress management through HRV and stress level tracking
• Discreet wearable for professionals who prefer minimal accessories
• Swimming or water activities (IP68 waterproof)

Good to know

The ring stores up to 7 days of data on the device and syncs with the Qring app for detailed analysis and cloud backup. It includes features like sedentary reminders, alarm clock, and find my phone. Note: the ring is app-controlled and does not have a display; all data is viewed on your smartphone.