HQRP 4-Pack 110V LED Light Bulbs Warm White for Singer 620/625 / 626/628 / 629/630 / 635/636 / 638/639 Sewing Machine plus HQRP Coaster HQRP&reg; Pack of 4 LED Bulbs plus HQRP&reg; Coaster; Base: BA15d Double Contact Bayonet Base; Lumen: 300-350; Working Voltage: 110V AC; Power: 3 Watt; LED: 64 LEDs; Lumen Color Temperature: Warm White 3500K; 200 days warranty!