Urban UR6 motorcycle / Bike Alarm Disc Lock 6 mm / 120 dB - Universal / Water Resistant with Reminder cable Pin diameter - Steel shaft 6 mm - Universal. 120 dB anti-theft alarm powered by a single CR2 Lithium battery. Water resistant IP54, Supplied with quality pouch,CR2 battery, hex key "DOUBLE ALARM" system. in addition to the beeps, the most powerful light signal in the market. 2 keys included / Made in Europe / Warranty 2 years for manufacturing defects