Color Selection:Red,Yellow Shock resistant, high transparent and fadeless dome Flash frequency: 70±5 times/min Two 6V 4R25 dry batteries used in parallel L for with LED light of high brightness B for bulb Voltage: 6V Red and yellow available Built-in switch: Connection: Closes automatically during the day and flashes automatically at night Disconnection; Power supply si disconnected If youre interested in the prodcut, Please contact with us by mail: Well provide the detailed information for your reference.