Retekess T130 Wireless Tour Guide System 64 Ports Tourism font Full width at half maximum

Full width at half maximum (FWHM): 12nm

then press the corresponding number

Blocks unwanted light from sources such as H-alpha and nitrogen

5 function buttons

MFR Coating: The 12nm filters work on systems as fast as f/1

Retekess T130 Wireless Tour Guide System 64 Ports Tourism font Full width at half maximumRetekess T130 Wireless Tour Guide System 64 Ports Tourism Retekess T130 Wireless Tour Guide System 64 Ports 4 Transmitters 60 Receivers with 1 Carry Charging Box This tour guide system looks very sleek and modern, The receivers are so small and lightweight, Each little device comes with its own earpiece, lanyard, and charging cable. This package including 4 transmitters and 60 receivers and one carrying case with 64 slots. So it can be taken out