I purchased this AKG PW45 Presenter set from Thomann a while ago and I have been using it as radio microphone for my dialogue location recording. And I can say that it really does what its expected from.
Pros:
-it has 4 UHF bands to chose from so you can switch between frequencies in case of interference
-small microphone and transmitter so it can be hidden easily when its used in films and location recording as well as plant microphone
- Very lightweight you won't even feel it when placed on the waist or in pockets
Cons:
- The built quality is a bit cheap plastique. but again if you take good care of them they will last
- The quality of the microphone recording is not that great yet acceptable for its price
Check this video and review about the AKG PW45 presenter set on youtube: a nutshell, I am very satisfied with the product. If you are looking for a lavalier microphone and wireless system on a budget I do recommend buying this product.