To troubleshoot 11 ...

(-)
Not at all tight to begin with ... A very basic quality plastic and rather thin, fragile joints, especially a cover on top that serves no purpose other than to ensure that the product is not waterproof .. .

(+)
The excellent price, allowing it to be accessible to everyone, whether for "troubleshoot" or for occasional use. The lighting and sufficient. And the product is not unpleasant to wear and holds up well ...

Tip: Waterproof by putting tape on the seams or go waterproof making new joints with glue provided for that purpose ...

Note the absence of NF. Just the CE standard and of course the absence of IP standard for sealing .. !!