Works well in the beginning, then issues started to roll in. After a few uses, flat frames are showing horizontal patterns (with a CMOS camera at around 0.5s exposure). The strange pattern disappears at slightly longer exposures ( <2s), but it's a bit too bright for my camera. Then I tried to lower the brightness with the software but the brightness resets after around 15 seconds. Cannot lower the brightness either with power from a USB power bank and pressing the push button, as the light cuts off after a few seconds... I Wish the control software and firmware is more stable, otherwise, the product is really handy in many scenarios.
Meets my expectations. No problems noted.