Thank you for viewing. This is a set of 16 Philips SpO2 sensors, model M1901B. Expiration dates: 2027/9/30: 8 pieces 2027/8/31: 5 pieces 2027/6/30: 1 piece 2027/1/31: 1 piece 2026/4/30: 1 piece Please understand that these have been stored at home. Please note that the price is not negotiable. Thank you.