PortaBrace PB-4LCS Lens Cup, 4", Silver Tab

hi everyone uh in today's video i'm going to review this uh coffee mug which is a camera coffee mug so it's like a lens and inside that we have a glass which is uh i think a made of steel so we can say it's a steel and it's very top-notch quality and as you can see it has a lid too and it has some like circular thing which can be tightened up with the lid and i tried it uh by uh moving it in move it in different direction something like that and before that it was not leaking but i think it started leaking so i was about to say that that it's leak proof as you can see it has some silicone thing but let me just reclose it again and see whether it is leaking really leaking or not so it's tighten up and let me just do it again and now it is not leaking so it's a leak-proof design but you need to uh like uh always remember uh to tighten up with every screw so as you can see uh there is no s