Packing: CartonLight source: super highly bright light diode Flashing Frequency: +/-5% Light Color: yellow/red/amber Voltage: 3V Power Consumption: 0.05WVisible Distance: 250m-350m, two 1.5V AAA alkali cells, 200-500 hours continuous flickering Internal SwitchFlashing: It automatically shuts off during the daytime, and automatically flashes at night