Look at them ladies...Growth is accelerating
I've tried a search on google to find out what's inside the light panel. What I can see it's either an old version with 10W bulb leds or the newer version with the 10W COB leds mounted on a aluminum plate. I doubt these are really 10W as a COB would be 4 times larger then in their pictures. Either way, inside should be a driver board or module mounted on the board since these leds are DC. If you're handy with a soldering iron you could dim that with a triac dimmer. The only question is, and I'm handy with a soldering iron, if it's worth the effort and parts. This light is sold for 120€/$ ish and one can only assume it's very old tech, even the newer COB model.
If I were you I'd invest in a decent lower end light from one of the manufacturers here on the forum.
@Marshydro is one of 'm. I've got a TS-1000 inside a 60x60x140cm / 2x2x4.5' tent and only at the peak of veg and beginning of flower do I dial the light up to 100%. This light also uses 150 real Watts.
Oh, and they have a coupon code 'AFN' which takes off some pingping