Nrog 400 lumens kom pom qhov twg thiab thaum twg koj xav tau. Ua nrog cov cim tshiab COB LED chips. Thaum suav txog 100lm / w brightness, peb lub teeb LED tuaj yeem txuag tau ntau dua 80% ntawm kev siv hluav taws xob raws li US Department of Energy.
