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