Not dimmable; Luminous flux: 7800-8700lm; Ultra-high brightness and energy saving, 50000 hours lifespan Heat sink and built-in fan ensure good heat dissipation 360 degree beam angle; No UV or IR radiation in the beam and no flickering Overall dimension: 10-2/5' x 3-5/8' x 3-5/8' (26.5x9.3x9.3cm); E26 socket, easy to install and operate UL certificated; Great for using in shop mall, coffee shop, supermarket, office, factory, workshop, warehouse, storage room, building, corridor, museum, etc.