I can not say much, only that they have already seen a number of evenings and I still use the first set of batteries on the long-term use, of course. Also they seem to be very robust because they have already endured a few drops to the ground (as can happen sometimes is a funny evening).
To be delivered:
- 4 AA batteries Sony
- 2 Wireless Microphones (red, blue)
- Receiver Station with Mini USB port
- USB to mini USB cable
- White storage bag
The microphones require 2 AA batteries. No problems with the battery compartment.
They have a slide switch; (so they are not accidentally or other turned off) Power Up, Down Lock. They have a comfortable weight and fit comfortably in your hand.
The receiving station is very easy and the cable about 50cm long. At first it was a little stiff, so it has always pulled the station, but that are also over time.
So far I've noticed little to no interference from other devices (WLAN etc).
Would be even more desirable for the bag, that the string any retaining closure would be to incurring the bag. So you always have to seal it with a knot.
I use the microphones mainly on PC with UltraStar Deluxe. Have you set up according to the instructions in the Ultra Wiki and then they immediately work properly. In Windows 7 and Vista Of course you will also work on the Playstation.
All in all a very good product (for home use, of course), tangle-free and is available for parties. I hope it stays that way in the long run.