FYI - The company name is E-mag Ignitions. They used to make E-mag and P-mag ignitions. The E-mag was strictly an electronic ignition. The P-mag was the same but had an internal generator so it could self power, if needed. They dropped the E-mag a few years back so all you can buy to day is the P-mag.
As stated above, P-mags are smaller and lighter than standard magnetos.
