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minimized stray light
the transmitter could work for 10 hours
and the answer is very easy: You don’t have to expose longer
Full width at half maximum (FWHM): 12nm
Blocks unwanted light from sources such as H-alpha and nitrogen
Retekess T130 Wireless Tour Guide System 64 Ports Tourism font minimized stray lightRetekess 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
