No major difference except having a full panel would have more power over a larger surface area vs one of those bulbs. If you're relatively handy, you could probably rig up a setup with several of those bulbs for a relatively comparable effect.

I actually have that bulb and used it for testicles and some minor injuries but recently upgraded to this for full body treatment.

It's a lot more affordable than a joov but has nearly the same specs.

They're all the same basic Chinese product (including the name brand ones from joov and others). I have this and like it. It seems high quality and has comparable specs to more expensive models.

https://www.amazon.com/dp/B08687T6WR?ref=ppx_pop_mob_ap_share

I just got this and recommend it. There's a $180 model and $300 model.