Bonlux Ba15d Double Contact Bayonet Base LED Light Bulbs 120 Volts 4 Watts 350lm Warm White T3/T4/C7/S6 LED Halogen Replacement Bulb (4 Watts Pack of 2) 2pcs BA15D DC Bayonet Base LED Halogen Replacement Bulbs; No shadow, energy-saving, low power consumption, long service life. Suitable for replacing traditional sewing machine bulbs; 4W Power consumption 35 Watt Equivalent 350 Lumens 100-130V BA15D DC Bayonet Base; Easy to install, plug and play; Before installing, please make sure the input voltage is AC 110V; this bulbs is not dimmable;