As an indication, a traditional bulb of 10-15 W replaces

16 led under plastic sphere
Lighting = WHITE 360°

Consumption = 1,8 W
Illumination = 32 lumens
Tension = 24 V cd.

Detailed description:
Total height bulb = 53 mm
Diameter bulb = 24,5 mm
Diameter base = 15 mm
Height base = 20 mm
Contacts = 2
Pins = shifted

Reference: 04BAY15D16-24