A round rotating lamp with a diameter of 90 mm is installed in magnetic tracks of the MAG-ORIENT series with a width of 26 mm and is suitable for creating diffused main lighting in residential and public spaces.
The aluminum body, painted black or white, is easy to fit into most modern interiors, and the ability to rotate the lamp around its axis by 350° and deflect it by 90° relative to the ceiling allows you to redistribute the light in the room.
The variety of glow colors, powerful luminous flux and high color rendering index allow the lamp to be successfully used in rooms with high requirements for light quality. With models controlled by DALI and TUYA Zigbee, it is possible to adjust brightness, color temperature and create lighting scenarios.

Dimensions of the light-emitting module: Ø90×56 mm
Color temperature: 3000, 4000 K, MIX (2700–6500 K)
Luminous flux: 740, 770, 800 lm
Beam Angle: 110°
Color rendering index: CRI>90
Dust and moisture protection degree: IP20
Power consumption: 9 W
Power: 48 V
Control: no control, DALI, TUYA Zigbee
Case color: black, white

https://arlight.ru/search/?q=MAG-ORIENT-RONDO-R90-9W 

who works in a V-Ray version lower than 3.1, be careful, in the materials in the BRDF section there is Microfaset GTR (GGX), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward – whichever is preferable for you