Xena (XX10-SS Disc-Lock Alarm for Motorcycle, Stainless Steel Lock features 10mm carbide-reinforced pin, double-locking system, Ultra-high strength, freeze spray-resistant key barrel, maximum security key and barrel Alarm features 120dB alarm, auto arm/disarm, removable alarm module, shock and movement sensors Weight is 616g; 1 x CR2 3v Lithium Batteries It includes 1 XENA disc-lock, 1 CR2 battery, 3 Keys, 1 XENA lock tool etched with Unique Key Code