A tethered pressure switch add-on alternate cap for the G&P G2 LED Flashlight (GP847).
The 19cm wire ends in a 6cm pressure switch, the package also including a couple of sticky-back Velcro strips for more securely affixing the pressure switch to your surface of choice.
This model is available in different colors to match the different colors that the G2 LED flashlight is available in. Note that this product is just the cap and switch and does not come with batteries or a flashlight.