Replace traditional bulbs with the adjustable white light and enhanced control of Cync Tunable White smart LED bulbs. These general purpose bulbs provide the perfect white light for every room by adjusting the white tone from warm to cool. Synced with your sleep/wake cycle, these bulbs go from a warm calm light at night to a crisp, to vibrant light in the morning. Now you can set scenes and schedules, group your lights together and dim and brighten your bulbs.