Efficacy: >126 LPW. Chip: LGIT 5630 HE. Driver: Espen Dimmable LED power supplies, Current can be adjusted. THD: <20%. The external driver ensures steady performance and long lifetime. Temperature limited: The product has applied for a type TL LED driver.Standard Lifetime: Designed minimum 50,000 hours. Mounting: Recessed Lighting fixture. The 0-10v Dimming Type is continuous, The product can dim to 10%.