This strong, light, easy to carry throttle and brake lock will scream like a banshee if anyone tries to move your bike. And carries in a jacket pocket! Illuminated blue LED light blinks when armed and the built-in high-precision tilt sensor shrieks out a 110dB alert (in 15 second intervals) if your bike is moved. Die-cast and thick high-strength resin body design is extremely resilient to cutting, prying and impact. Lever position lock adjusts to fit almost any bike. Keyed lock is covered by weatherproof dust cap. Includes 2 keys. Power supplied by 3 long-life button cell batteries (included). 6.5"x2.5"x2". Weighs 1lb 2oz.