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5 year life-cycle tested: Dependable motorcycle alarm Removable, sealed unit alarm module to fit to your bike Can be used as a disc lock or padlock: Great adaptability! Motorcycle alarm: Oxford’s strongest ever lock with a 100db integral alarm. The Oxford Big Boss alarm has been independently approved by Thatcham Vehicle Security, SBSC Intygad Produkt, ART 4075 (16mm version). It has a 5 Year life-cycle tested (by Thatcham) and is water, vibration, frost and heat-proof. It can be used as a disc lock or padlock and is delivered with batteries included.