One incredible underestimated flashlights in the market.
Nice innovation and easy to setup. Works ok for simple operation on/off and so useful when out walking at night or working in a shed/garage. Often it does not register the hand gesture so I would not use it for night trail runs which is what I bought it for. Also little fiddly either waving had a few times through the sensor fort different operations or holding hand over to increase brightness. I would suggest a more simplified operation like just on/off for next version.
The quality of this extra switch is rather good. Good materials and well fabricated! It works well with my new E7. Having an external switch can be quite handy, especially as the power button on the E7 is too small to push while wearing gloves.
However, the idea of a gesture control is nice but has flaws in certain moments. Like, when you work in tight spaces, the switch would activate unwanted, through your head moving along objects. But in open field maybe a nice gimmick.
Was using sensor to find E7 in the dark but it drains the battery fast if left connected. The hand has to be very close to the sensor to switch on or change modes. Wished the E7 had a cutout at least for tritium if you cannot light the aux to find in the dark.