Previously, HD used HJC and Bell. If you can't get your hands on one google the US sites that may have them - I found the reviews on their to be helpful.

It it was "just" a helmet, it'd be one thing.

The NO2 is the full integrated package. I'd love to have one if they made a flip front version. The Bluetooth mesh communications technology in it seems good

Anyway, I've found a link to the user guide for it

Here's a good article on the WHIM

The helmets are great. Very comfortable, very quiet and great visibility. I have alpine ear plugs which I’ve had to use for all my other helmets and I now don’t need them. Pairing to the phone is super easy as is pairing to the other helmet. When you turn them on they automatically pair to your phone and each other - very easy. Sound quality is very good and the volume is easily loud enough - I can’t have them on maximum volume. Once you understand the voice commands they are great to use. You never have to use your hands at all. Phone quality is fantastic both ways. All in all I would certainly recommend these helmets with no hesitation. The only down side is the Sena App is rubbish but promises a lot and would be great if it worked. I’ve submitted a complaint to Sena so hopefully they fix the App, then there would be nothing to complain about. Great product.

I do like the idea of ditching the earplugs.