Blue Filter used with night vision equipment, produces less disturbing light, good for navigation or map reading as it show contour lines better than red. green also used hunting as it will not alert game and It's the brightest of all the colours for easier navigation and also makes it easier others to see you.
Available in sizes to fit T series, M Series,SR Series and S Series.
Binnenmaat: 42mm
Buitenmaat: 46mm