1Fitment: EWS3 EWS4 test platform replacement for Land Rover EWS Programmer, test platform can work with all rechargeable keys. 2Rechargeable: Besides for Tango key programmer, EWS test platform is the only device in the current market which able to charge for the rechargeable key. 3Test for PCF7935 Or EML: EWS test platform is able to test whether the PCF7935 chip or EML electronic chip key complete programming or not. 4Test Items Working State: Able to test EWS3, EWS4 working or not, test EML key electronic chip working or not, and test after fixing EWS data. 5Easy to Use: Simple to operate, plug and play, no modification required, no complicated operations, convenient and easy for you to use.