The most common bases are the Edison medium screw (E26) and the Edison candelabra screw (E12). Both E26 and E12 appear across appliance and general-use 40W bulb options.
Common shapes include compact appliance sizes like A15 and A19 and decorative shapes such as B11 and BA11. The set also includes at least one non‑standard, higher‑output shape listed among the options.
Typical 40W-equivalent bulbs fall in the ~300–450 lumen range (examples include 300, 320, 415, 450 lumens). One listed high‑output LED is an outlier at about 5,200 lumens, which is much higher than typical 40W-equivalent outputs.
Common color temperatures include 2700K (soft/warm white) and 5000K (daylight). Multiple bulbs in the group are listed at those exact temperatures.
Both traditional incandescent 40W appliance bulbs and LED 40W‑equivalent replacements are offered in the selection.
Many of the listed LED and incandescent options are labeled 'Dimmable (Full Range).' However, at least one high‑output LED in the group is noted as non‑dimmable/1‑way, so dimming capability depends on the specific model.
CRI values in the available details range roughly from 80 up to 99. Many LED options are around 90–95, and one incandescent entry lists a CRI of 99.