- Stainless steel shell: The COLMI R02 smart ring shell is made of stainless steel, which is highly corrosion-resistant, beautiful and comfortable to wear.
- Health function: COLMI R02 smart ring can monitor blood oxygen, heart rate, sleep, etc., and pay attention to your health.
- Sports recording: COLMI R02 smart ring can record your sports status and let you know your sports information at all times.
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