... . Power: 15w; 3.Light efficiency:>55lm/w 4.Ra>82. U shape CFL lighting tube::1. Tube diameter: 9mm;2. Power: 15w ... efficiency:>55lm/w4.Ra>82.5.Color temperature:6500K Description:U shape CFL lighting tube::1.)Save 80% energy more than incandescent ... .Application: Home, Offices, Shops, Department Stores, Clubs, Restaurants, Hotels, Supermarkets u shape CFL lighting tube