I have this item and I have to say it is one of the best sonic's they have made because instead of two sound FX on Tennant's sonic the 11th Doctor's has 4.
The annoying thing is that at the bottom the is a lid which you flip open which then you press the res button and it just keeps opening which is very annoying
- Press it once 1. High pitched sonic FX
- Press it once 2. Low pitched sonic FX
- Press it Three times 3. Sonic Scanning Mode
- Press it more than four times 4. Sonic Malfunctioning
You can actually get a full review of this item on YouTube->tardis59->Doctor Who: Eleventh Doctor's Sonic Screwdriver Toy Review