Xena Xx-6 Disc Lock with Alarm Xena Xx-6 Disc Lock with Alarm feature a self-arming 120 db lithium powered alarm, shock and motion sensors, maximum security key barrel, ice spray proof body. Features: Brand-new design with a flared, attack-resistant body shape Straps to your brake-disc like a well-fitted glove High nickel-content stainless-steel mono-block construction and piercing alarm Shorter, squatter body gives it a sport and streetbike-oriented fit profile 6mm locking, carbide-reinforced hardened-steel locking pin Shock and motion sensors linked to a sophisticated microprocessor trigger a 120 dB alarm Self-arming, with no on-off switch, re-sets automatically to armed mode within 15 seconds if the attack stops Alarm module with CR2 battery Stainless Steel, 6mm pin Dimensions: 3.3 long x 2.3 high Included Items: (1) Disc lock (3) Keys (1) Alarm module removal key