COLMI R09 Smart Ring — Sleep, Heart Rate & SpO2, 7-Day Battery

The most discreet health tracker there is: a ring. Heart rate, blood oxygen, sleep and activity tracked around the clock — no screen, no watch.

• Heart rate, SpO2, temperature and sleep sensors
• 7-day battery life, 5 ATM water resistance
• Titanium, 3 g, sizes 7 to 13
• iOS/Android app with sleep and recovery scores

✅ 2-year warranty · 🚚 Tracked delivery · ↩️ 14-day returns