4 LED Cync Smart Bulbs Simple set up without a hub - Control Full Color bulbs using the Cync app with no additional hub or bridge required Choose from millions of colors - Enhance your home's atmosphere and add a festive vibe with vivid colors Adjust light from warm to cool - Adjust your white light to any color between warm, amber light tones (2000K) and cool, bluish tones (7000K), including optimized settings to support your sleep/wake cycle Create custom schedules - Automations allow you to schedule when lights are on and off, including customized schedules for different days of the week