1.can inform you within 1km if the thief stolen your car
2.no need change the car or bicycle wire
3.the batter can use 12month

1.it is come out 2011-10-03 in our company one doll is a sensor ,other doll which people take with keys is infrom people alarm if having the thief stolen your product

2.the concealment is very good ,now i can make sure you dont think it is guard against  thief product ,because it hide  indside the doll

3.it can fit any product ,if you put hide the back of door ,can protection your home cannot  stolen ,

  if you put in the car ,can protection your car not stoledn

 if you put in the box ,can protection your box ,not stoledn

if you put inside the bicycle tube ,can protection your bicycle not stoledn ,

because if some people shake your something such car ,box ,door ,the other doll speak can say "bibo" or to say "be care ,your product now is stoleing by thief !"

4.the batter use 12V23A,no need change the car wire ,fit any product ,inform distanct is more than 500-1km

so  if you drive your car go shopping ,dont worry ,because the 500-1km wireless inform distance is ok ,some thief  stolen your car ,you can get him!