Exactly what it says...it has multiple meters...

• Locates concealed AC power cables
• Locates concealed metal objects like pipes, nails, screws, cables etc
• Incorporates a Laser Level
• Incorporates a Spirit Level
• Incorporates a 'white-light' LED Torch
• Tests Light Bulbs including fluorescent and incandescent bulbs/tubes
• Tests Cartridge Fuses, Diodes, Capacitors, Heating Elements etc
• Locates breaks in an AC power cable
• Checks polarity on two cable (no earth) AC appliances
• Incorporates a 'self-test' battery check for added safety and piece of mind

I have NO IDEA what a Spirit level is (well, now I do since I looked it up on wiki). Needless to say, this probably meters everything you'll ever need in your house. (via Gizmodo)