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Bullet light bulb flickering fast with helix filament in 4K -
Bullet light bulb turning on and off slowly with helix filament in 4K -
Vertical bullet light bulb flickering fast with warm helix filament in 4K -
Extreme close up of bullet light bulb with helix filament turning on and off in 4K -
Extreme close up of helix filament flickering and turning off in 4K -
Close up of helix filament flickering fast and turning off in 4K -
Close up ofn warm orange helix filament turning on and off slowly in 4K -
Close up of orange helix filament flashing fast in 4K -
Ogive light bulb with vertical wave filament turning on and off slowly in 4K -
Extreme close up to waves filament flickering slowly in 4K -
Close up to ogive light bulb glowing in darkness in 4K -
Close up to ogive light bulb turning on, flickering and turning off in 4K -
Close up to globe bulb turning on and off with weak brightness in 4K -
Close up to globe bulb turning on and off flickering several times in 4K -
Vertical traveling shot of close up of spring filament glowing in 4K