This Osram MiniXen® 3886X mini bayonet (BA9s) base bulb has an ultra long life, and produces 85 lumens from 6 watts. That's up to 80% more light compared to the following standard bulbs: •European T4W or 3893 •American 57, 57X, 1891, 1893, 1895 Availability: Usually ships the same business day. 3886X$4.62