This keychain light is rechargeable and is more of an illuminated novelty than a functional light.
The button simply toggles the light on and off with no dimming or strobing features.
Once the novelty wears off, this PCB has possibilities for a custom light. Especially when combined with a bigger cell.
One major improvement to this design would have been to have a round port at the end to allow unfiltered light to come out for better torch functionality.
This light came from AliExpress (not a sponsor):-
https://www.aliexpress.com/item/1005008866336015.html
It should only cost £2-3. If the listing has gone, try searching for the listing title:-
Gaming Theme My world Keychain Surrounding Torch LED Light USB Rechargeable Mini Torch Keychain
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