110db Bike Chain Lock with Alarm, 4ft Biycle Lock with Anti-Theft Alarm, Heavy Duty Anti Theft Security Cycling Chain Locks Suitable for Scooter, Bicycle, Motorcycle, Gate

This BABEJIA 110db Bike Chain Lock with Alarm, (ASIN: B0DWMQ113J) seems like a good and secure way to protect your mobile transportation! It comes with 3 keys, and 2 key fob remotes for the alarm. The lock itself is rather bulky at the shackle part, because that is the locking mechanism, as well as the alarm. The chain is covered in a nice fabric cover, but feels like a fairly ordinary chain link inside. I believe the 6 mm thickness claim. but you can’t readily remove the cover to see what is inside.Both the lock itself and the 2 key fob remotes are rechargeable via USB-C (cable included, but no wall adapter), and charge up fairly quickly. The alarm seems to sense motion or attempts to lock or unlock the chain (but that is likely just motion again), and is easily controlled by the key fob remotes. The key fobs do not lock or unlock the chain itself. The locking mechanism and the alarm are not really tied together, per se, as each functions independently. So you’ll need the key AND the key fob to disabled the alarm, and then unlock the chain.All it all, I think this will be very handy. The alarm is loud, and being able to recharge everything is super nice. They claim the lock alarm battery lasts a month or two, while the key fob batteries should last about a year. I haven’t had it long enough to test these claims, yet.My only potential concern is that the lock seems to be cased in plastic, as the alarm is in there too. I’m not sure if they could be easily knocked off with a hammer or something, or not, but here’s hoping they thought of that, and the lock is secure regardless.