Specification of  3.5mm audio jack Tdes and DUKPT encrypted Mobile Magnetic Card Reader for Android and Iphone and PC:

Cell battery is replacable during use
3 tracks

Bi-directional read

High reading speed. 

Support TDES, DUKPT, DUKPT encryptions.

Provide SDK for android, ios, windows os, work on all series of smartphone, tablet and PC.

Decode: F2F (FM) electronic hardware decoding, reliable.

Error rate: less than 0.5%. 

Android/IOS Mobile , PC or Tablet, all series.

3.5mm audio jack interface 

Specification: