Favoto Alarm Disc Lock, 3 Keys and 18 Batteries (5-Year Availability), 110 dB Waterproof Anti-Theft Security Brake Padlock, 7mm Lock Pin with Reminder Cable, Fit for Motorcycle E-Bike Bicycle Scooter

Your promotion tells 3 keys! I only got 2! That's why I gave it only 4 stars!

Alarma sensible al movimiento. Fácil de colocar y quitar con llave de seguridad

Todo excelente buen producto

I need something to protect my ebike and watched a lot of YouTube video on bike locks. I saw this lock on a motorcycle last week and looked into it. The concept is good so I decided to give it a try. The lock came quickly and the package included two (2) extra LR44 replacement battery packs, very nice! I played with locking and unlocking a little, and have to put on my ear muff to continue my testing. The alarm pitch is just piercing! The alarm beeps once when you lock it. When it detects vibration, it will beep 3 times as a warning. If vibration continues, the alarm will go off until you unlock it with the key. When you unlock with key, don't fumble too much, just do it precisely, so you don't trigger the alarm. If you lock/unlock on your brake disc carefully, I don't see any concern of contaminating the disc. You should not have to touch the disc surface. I would not use this lock as the *only* deterrent for theft. This lock will prevent people from just lifting up your bike and walking away with it. Pairing it with a good U-/cable lock (as pictured), I think that will give you a better solution for the money. I think this is a great product!

Muy bueno, con el robo de motocicletas en alsa recomiendo que compren uno, cumple su función perfectamente.