Customer Reviews Based on 4 reviews Write a review 100% (4) 0% (0) 0% (0) 0% (0) 0% (0) J Jamie R. highly recommend Good quality. The reading is reliable. J J A. Handy & Accurate Fits in your pocket. Access anytime. Accurate: cross checked with other devices. C Connie FS20C FINGER OXIMETER Excellent product. Easy to read and accurate. J John Good! It provides easy quick readings and gives me accurate results. My oximeter measures my % oxygen saturation accurately when others do not register an accurate reading.