... for card reader of mobile phone 1 track low profile read head series used in POS (point of sales), magnetic card ... parameters include inductance, DC resistance, gap width and more. Adjustable as follows: Inductance from 25 ... to 350 ohmNormal lifetime (500,000 times) and long-lifetime (more than 1,000,000 ... ) technology support (sendust).several mounting brackets for 1-track low profile heads,also we ...