Here is Amazon Prime Day Sale get OPPO Smart Watch Band with Extra Sport Strap - Continuous Blood Oxygen Saturation Monitoring（spO2, Up to 12 Days Battery Life, 1.1" AMOLED Display, 5ATM Water Resistant, Supports Android and iOS（Black ) get flat 50% discount worth Rs 3999 but the Prime price at just Rs 1999 only.
OPPO Smart Watch Band with Extra Sport Strap
- Dynamic SpO2 Monitoring to measure the oxygen saturation at any time during the day or night
- Sufficient power can support up to 12 days of use
- Screen with a curved layer of strengthened, scratch-resistant glass.
- You can wear the OPPO Band in the shower, in the pool, or at the beach
- OPPO band comes with an extra strap free in the box – You can always find the fit for your occasion and mood.