HomeProduct Special FeaturesBlood-Oxygen Saturation Monitor Blood-Oxygen Saturation Monitor Filter Showing the single result Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Sort by editor review Added to wishlistRemoved from wishlist 0 Add to compare - 15% Best fitness smartwatches with heart rate monitor under $200 Amazfit GTS 4 Smart Watch with Step Tracking, Heart ★★★★★ $199.99 Original price was: $199.99.$169.99Current price is: $169.99. Buy for best price