C9 Twinkle Bulbs 7-Watt (25 Pack) C9 Multi-Color Twinkle Bulbs (Red, Blue, Amber, Green, and White). Use with our C9 Socket and Wire Sets or C9 Bulk Spools. Base: C9 Intermediate E-17 Base. Includes 5 bulbs of each color. Input: 120v, 7W. Lifetime: 3000.