Great price, small and doesn't add much weight to my rig.
I haven't used it much, but it fits my mobile device perfectly. It is not bulky and reliable. Brightness adjustment and easy to remove when not in use. It doesn't weigh much either, which is nice too. Used with my DJI 2 phone, iPhone xsmax.
Pros
βΊMade of high quality metal material, sturdy and durable.