Is a Bluetooth 2.1 iPad compatible with a bluetooth 3.0 keyboard?

[Flotzie]

Hi

I'm fancy buying this but am not sure if it'll work with my iPad 1?

http://www.amazon.co.uk/gp/aw/d/B005ONMDYE/ref=ox_sc_sfl_image_2?ie=UTF8&m=A2PGPJL0BBLHLX

I have emailed Anker tech support but have not heard back yet.

Note: Moderator, please move if posted in wrong forum, thnxs.