I am a Level 5 Referee who initially bought a set of buzzer flags, but was not happy with their performance, and found the receiver uncomfortable to wear.
I spent time looking into other makes and could not find any to my liking.
Started to investigate if I was able to make my own set, we are now able to manufacture our own flags and we have a buzzer and non-buzzer version available.
The buzzer version has the option to have a watch type or an arm-type receiver.
Over time we have been able to adapt other makes of flagsticks to use this product.
We started this as a business in January 2022, I have tested the prototypes myself in games and they work perfectly fine. We use a modern type of receiver which is styled like a watch and also have a second type which can be worn like the other receiver on the arm.