Replacement Bulbs for the Celestial Lights Adjustable Window Candles. 2 Pack. Two-in-one brightness levels with Brighter Than Electric cordless window candles. An innovative design features two high-intensity LED lights, mounted side-by-side inside the clear bulb. Both LED has a super bright end and a warm glow end. Face the window candle's super bright end street-side and the warm glow end automatically faces towards the room. Step outside and you'll be amazed with the bright light in your window; come back inside and relax in the warm glow of soft LED lighting.