Dean, looking at the Saxon pages for the eyepieces that come with their 130mm scope, I think the eyepieces might be the same as the ones SkyWatcher uses, modified achromats.
Saxon eyepiece pages
Super 10 -
https://www.saxon.com.au/saxon-10mm-...-eyepiece.html
Super 25 -
https://www.saxon.com.au/saxon-25mm-...-eyepiece.html
International Astronomy Forum thread - What kind of EP are the stock SkyWatcher 25mm & 10mm?
http://www.astronomyforum.net/telesc...25mm-10mm.html