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Most appliance bulbs use the Edison medium screw base (E26). Common bulb shapes for appliances include A15, A19, and A21.
Based on the listings and assuming about 3 hours of daily use, LED appliance bulbs are commonly rated up to about 13.7 years, while incandescent appliance bulbs are rated around 1.4 years.
Rechargeable LED appliance bulbs typically include a built-in battery that requires an initial charge (about 10 hours), automatically provides light during power outages, and can run for several hours (listings cite up to 5 hours at about 650 lumens). Some models also function as a removable flashlight.
Overall lengths listed range from about 3.5 inches up to about 5.63 inches, depending on the bulb shape and type.
Color-changing bulbs frequently include a remote for on/off, dimming, and color or mode changes without needing an app or hub. Smart Wi‑Fi bulbs connect directly to 2.4 GHz Wi‑Fi and provide app-based control, scheduling, and voice-control support via smart-home platforms.