Flashlight-kubotan: a good idea or dummy

The human brain has an amazing ability to combine incompatible things at first glance.

And so it happened!

Some time after the flat kubotan literally dreamed of me , there was a problem of an insufficiently bright “flashlight” of the next smartphone.

And then the clap! IDEA!

Do not judge strictly for a clumsy prototype, but join the discussion!

What features are supposed to get in the gadget:

1. Flashlight, including for use as an additional flash to the smartphone like iblazr.
2. Powerbank
3. Kubot directly

Estimated TTH - aluminum case, diameter - 25 mm, length - 140 mm, battery - 1x18650, a pair of 3w LEDs, a magnet for fixing on metal surfaces.

Actually, the question is - is it worth trying to start producing such a device and what should be changed in it?

In fact, I see three things for correction - we need notches / relief body, the lantern should be classic - shine along the axis, the button is larger - in the prototype I just used what was at hand.

Well and so, the device in a pocket / hand and on weight does not cause complaints.

Would you like such a device?