Fixed Flash Rate_x000D_ Common 9V Battery operation_x000D_ Optional Trip Wire Device_x000D_ Optional Vehicle Power Supply_x000D_ Covert Marker for use with Night Vision and other Night Vision devices_x000D_ 240" x 360" coverage_x000D_ Use to indentify frinendly force positions, demaration lines or perimeters_x000D_ Size: 1.19" x 0.9" x 0.574" | 31mm x 22.5mm x 14.6mm_x000D_ Flash Repeat Cycle: 1.3 Seconds (Fixed)_x000D_ Flash Duration: 20 Milliseconds (Fixed)_x000D_ Battery: Common 9 volt_x000D_ Weight: 50g_x000D_ Light Color: Blue