Good lamp, 10 Seconds life (18650 USE ONLY)

Well, this lamp would be measured by their price quite Ok if you would keep for.
I have used them with the enclosed CR123 and then she lit up 10 seconds. That looked good. Very much visible light and everything nice as you want it.

But then was from the mouse and the lamp was broken. After some reading I come to the conclusion that it is either a defect as determined at 50% of the lamps occurs because it is just totally cheap or the voltage is too high.
Cheap components can not cope with all the stresses. So I would not recommend this lamp to be used only with a 18650 battery. Since a good but also costs around 10, was with too much money to me to buy this lamp again.

The quality of light is otherwise halt the price accordingly quite OK, considering that one even gets a holster it.