Technical Data battery: CR 123 working temperature: -10° to +40°C diameter in mm: 107mm function attribute 1: magnetic attribute function 2: impact resistant weight in g: 200g height H: 35 mm page main catalogue: K15_522 main bulb: LED luminosity: 13.000 mcd material1: aluminium videolink: http://youtu.be/7K11c3cBTco