Some color-changing bulbs include a physical remote for on/off, dimming, and color/mode changes. Other smart bulbs are controlled by a smartphone app, Bluetooth, or voice assistants.
Options range from RGB bulbs with several presets and a couple of white-temperature choices to bulbs that offer millions of shades plus continuously adjustable warm-to-cool white.
Many remote-capable bulbs use the standard Edison medium screw base (E26) and come in common shapes such as A19 and BR30.
Physical remotes or local Bluetooth control often handle about 10 bulbs (within a room or roughly 20 ft). Using a dedicated bridge or hub can expand control to around 50 lights.
Product listings report bulb life values ranging from about 13.7 years up to 22 years.