HQRP® LED Bulb BA15d Double Contact Bayonet Base; Working Voltage: 120V AC; Power: 3 Watt; LED: 64 LEDs; Lumen: 300-350; Lumen Color Temperature: Cool White 6000K-6500K; Compatible with Singer 201, 221, 221K, 222, 247, 301, 301A, 301K, 328K, 337, 347, 401, 401A, 403, 404 Sewing Machine; HQRP® Led Bulb can be used with Sewing Machine, Car headlights, Lights for trailers, Sea vessels, Household appliances, Signal lamps, Street lighting, Decorative lighting.