This is an elite halogen G4 capsule by Osram LEDVance. This 20w 12volt is rated to 4,000 hours average lamp life and 100,000 switch cycles. The brilliant accent light of the G4 capsule is typically used in domestic applications such as cooker hood lighting or slim style luminaire designs. What is unique about Osram G4 Starlite capsules is the corrosion protected pins & axial filament within the lamp. This basically means that the pins will be protected against moisture and heat disruption. Additional features of this lamp are: 300 lumens, 100% dimmable & a colour rending index of Ra 100. Product dimensions are: L33mm x D10mm. This is a premium branded lamp and one of the best on market.