This lamp from LEDVANCE uses one bulb. This model is mainly intended for indoor use and can change the lighting of a whole room.
From ManoMano
Ledvance 'Smart' led ceiling light 12W 900Lm 3000…6500K 110º IP20 Dimmable (LVE-4058075572911)
Conrad Electronic
LEDVANCE 4058075572911 SMART SURFACE DOWNLIGHT TW LED surface-mount light LED (monochrome) Built-in LED 12 W White