This is a set of 6 Nellcor OxiSensor III N-25 sensors. The expiration dates are: 2028.01.31 x 2, 2028.02.29 x 2, and 2028.03.31 x 2. These are new, unopened items, but please understand that they have been handled by a person. We cannot provide any warranty for damage during shipping or initial defects.