This GPS unit is used by elite professional sports teams, athletes and institutes to collect multiple running data metrics such as distance covered, high speed running, maximal sprint speed, number of accelerations/decelerations etc. I used this unit for a published research project & it is no longer needed. It is in very good condition & comes with a third party hardcase I used to transport the device as well as instructions, charging/transfer cable, vest (medium) & heart rate vest (medium). These are worth £600-700 for just the unit alone! Open to realistic offers