5w E17 LED Light Bulb Led Spot Light Bulb R16 Reflector Can Light Warm White 40 Watt Incandescent Replacement E17 light bulb Perfect standard size, replace 40W incandescent directly. Save electricity bill. Replace 40W incandescent bulb by 5W LED. Save over 80% on electricity bill of lighting. Long life span. Lowers maintenance costs by reducing re-lamp frequency and save your trouble. Fully dimmable,turn on instant,less energy and are brighter than a CFL.