Universal ground light DAFNA 16W.
The technical features of this series of luminaires allow them to perform a variety of tasks, from uniform illumination of large areas to accent lighting. Models with four beam angle options help illuminate walkways, courtyards, and facades in a consistent style.

Dimensions: Ø160×135 mm
Color temperature: 3000, 4000 K
Luminous flux: 1440, 1460 lm
Beam angle: 10, 20, 35, 45°
Color rendering index: CRI>80
Dust and moisture protection rating: IP67
Power consumption: 16 W
Power supply: 230 V
Body color: silver

https://arlight.ru/search/?q=LTD-DAFNA-GROUND-R160-16W 

"If you're using a V-Ray version earlier than 3.1, please note that the BRDF section in the materials lists Microfaset GTR (GGX). If your version is older than 3.1, the BRDF field will be empty. Select Blinn, Phong, or Ward—whichever is more preferable."