Fairly loud alarm, starts with a quieter one and then got louder. Easy to attach (fits Kawasaki Ninja), there’s a slider to move that pulls the brake in tighter. Theres a tiny little bung inside that holds the slider still, that fell out when taken out of the packaging, it’s really small, smaller than a pea!! It’s lifhtweight, holds the brake, alarms when moved not just touched. BUT it takes a couple of times to set the alarm, if it does a double beep the alarm isn’t set, you need to unlock it and try again, a single beep says it’s alarmed!