... 4000k,3000kbeam angle20°surface colorsilver,blackhousingaluminumsuitable gearsexternal LED driverDescription:1. Adjustable type2. Order LED controller separately3. High power ... while lighting4.Indoor use only Application of led lamp:1. Show window, jewelry store, watches, exhibit hall, ... 7. Merchandising, exhibition stands, and panels Good service:1. Good after-sales service,warranty 2 years.2. Your ...