Base, Shape and Dimensions</br> Base: G8 2-Pin Bi-Pin with 8mm pin distance</br> Shape: T4 Tubular JCD</br> Diameter: 0.625 inches</br> Length: 1.38 inches (mini version)</br> Please make sure the light bulb base matches what your light fixture has. A common confusion is with G4 2-Pin light bulbs because they look very similar in photos, but the G4 has a much smaller pin distance of 4mm instead of 8mm. Please verify your pin distance prior to order. Lighting Features</br> Power: 20 Watts</br> Luminous Flux: 190 Lumens</br> Voltage: 110V, 120V, 130V AC</br> Beam Angle: 360°</br> Material: Glass</br> Color Rendering Index (CRI): 100 for vivid and enhanced color</br> Instant On. No Mercury.</br> Lifetime: 2,000 hours (1.8 years with average of 3 hours use per day)</br> CE and RoHS certified</br> Pack of 10</br> Working with Halogen Dimmers</br> These halogen light bulbs are dimmable using the dimmers designed for incandescent & halogen light bulbs. All incandescent and halogen light bulbs are dimmable using traditional dimmers, as these dimmers simply adjusts the voltage level for dimming.</br> Dimming using LED only dimmers will result in incompatibility, as LED dimmers work very differently. Please check the compatibility of your dimmer switch or light fixture prior to purchase.</br>