... : 5500k—6500k FEATURES:This product adopts aluminium alloy lamp fixture, which makes its texture harder, weight lighter, heat ... reaches 500lm, light efficiency reaches 100lm/w. Compared with conventional incandescent lamp, lighting efficiency enhances 5 times, and ... CE ISO9000:2008. This product suits for professional application with indoor environment like in hotels, restaurants, offices, houses, ...