قفل فرامل القرص عالي الديسيبل

Really cool device simple to use and noisy to raise attention in case of bike movements. So really effective. Just the unlocking may be weird because it sounds alarm in like 0.5s. So when you plugin the key, you must be REALLY fast to unlock it before everyone looks at you strangely as if you're stealing the bike.

very easy to operate

I'm Happy from the product, It serves me Wells:)

Gives a sound when you try to move the bike, does it job

Es ist gut, auch schön laut, nur die Beschreibung ist in Englisch.
K.Keil. Luxemburg

Does exactly what it says on the tin

Fantastico