Purchased from Yamada Denki on October 22nd, I installed it once (for a moment) but discovered the main unit was faulty, so I immediately removed it and put it back in the box. I am selling it because I had to replace the entire unit. Although it is in near-new condition, it has been opened once, so please purchase only if you understand this. This is a cool fluorescent lamp, the Twin Parook Premier 100-type, boasting a long lifespan of 20,000 hours. - Brand: Panasonic - Model Name: Twin Parook Premier - Shape: 100-type - Color Temperature: Cool (Daylight color) - Lifespan: 20,000 hours Thank you for viewing.