NEEWER&reg; Anti-Theft Alarm Security Lock For Bicycle Motorbike Moped Bike Keep your bicycle safe and help catch the bike thieves. 3 sensitivity levels allow you to determine how much movement is needed to trigger the alarm. 100% brand new ,never used. Power supply: 1* 6F22 9V battery (Not include). Package dimension: 11*10.5*5.2CM.