R etro Style for Greaser and Outsider Diameter: ~ 160 mm (~6,30 inches) depth: ~ 140 mm (~5,51 inches) metal case The power connection is located in the case and can be easily reached through a large opening. Voltage : 9V ? 85V with E4 mark (tested by a European authority and given EC approval) Top quality  the lamp can be used within a e-bike cable harness and has the typical plugs