Another thought, is that WE can test batteries, We should be able to test this light ANY time we please. Flares are a one time, test, and you hope you never need them, and they expire. Flares expire, and Batteries go bad, so its a wash I guess, but the Pro is you can test the light any time.
Another thought is that my "Digital Aged Kids" know how to turn something on and off, (said Light) and might not be as well versed in a actual flare operation.
I am still not sold on it, but want to check one out next time I am a the store. I wont need one until I hit a major lake.
This link had way more technical info.
https://www.westmarine.com/buy/weems...88?recordNum=1