List of products by manufacturer NITECORE 
Nitecore | NWE30 Electronic Whistle - 120dB
NWE30The NITECORE NWE30 is an ultra compact emergency electronic whistle with an easily operable twist-and-buzz interface. Available with a 360-degree buzzing of 120dB, it will also automatically emit an omnidirectional beacon signal flashing of 2,000 lumens at night. With a max runtime of 72 hours, it aims to seize your best opportunity of being rescued.
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