Growstar’s UFO 300W is a compact, round COB‑style LED grow light for small indoor gardens. Retail listings attribute it to Growstar and specify a central Cree COB supplemented by Bridgelux/Epileds diodes to provide a broad spectrum including UV and IR. The fixture measures about 10.6 inches in diameter by 2.6 inches tall and is commonly rated for roughly a 2.5 × 2.5 ft coverage at 24 inches. Independent product data puts true power draw around 108 W, well below the nominal 300 W label. Listings also quote an expected lifetime near 50,000 hours. Its form factor and output suit seedlings, clones, and compact tents around 2 × 2 ft where a single COB unit is preferred over multi‑bar panels.
