So what are the pros and cons of your product? How much does it cost? Does it fit all helmets? Sorry, didn't feel like reading through the site!
The pros of the system are Speed and Control.
The e-tint visor insert is an extremely fast system. It changes from light to dark and dark to light in a couple milliseconds. Photochromics take about 15 seconds to fully darken and up to 3-4 minutes to go back to clear.
If you were to ride on a sunny day and go into a tunnel with the photochomic, the tunnel and tinted shield would be extremely dark and difficult to see, with the e-tint, it would change tint instantly upon entering the tunnel.
Photochromics are dependent on UV light to activate. There is no control. The e-tint can be set into a manual mode or automatic mode. Meaning you can push a button to instantly turn the tint on and off at your command, or put it in automatic mode where it will adjust to the light as you ride.
We make a universal fit insert and an Arai specific insert. The universal fits most helmets, the only ones I know for sure that we do fit are the HJC-RPS10 and the Shark Evoline helmets.
The cons of the system are that it operates off of a battery and it will need charged from time to time. It charges via a micro usb cord (which is used for most cell phones ect) Fully charges in a hour and gets you 25-55 hours (depending on the model) of tinted use before it needs recharged.
It also has a slight base tint in it's light state. I believe the transmission window is from 70%-25%. Where dark sunglasses are aprox 20% transmission.
The system also has a fantastic anti-fog embedded into the plastic, and our next generation AX-11 (Which we will be releasing in November) will be transferable from visor to visor. Actually we may be looking for a couple beta-testers in the near future.
Current versions retail for $119 (MX-8) and $149(AX-10)
Hope that answers all the questions.