Features: 1) Bulb: 5V 90mAh, φ6.5 x H6.5mm 2) Red, amber or yellow light 3) Voltage: 6V; power: less then 0.05W 4) 60 flashes/min (5% more or less) 5) Seeable distance: 280mm - 350m 6) For one 6V 4R25 batteries parallel-connection, can flash 300 - 350h 7) Carriage handle 8) Battery life is 3 times longer than that of standard road lamps 9) Equip iron locks for rooting and against theft 10) Two positions switch: OFF / ON (only at night)