Keep your holiday lighting bright and colorful with the Spare Bulbs – Zener Incandescent Multi (25 pcs). Designed for compatible Treetime pre-lit trees and light sets, these replacement bulbs help maintain a vibrant multi-color display with consistent brightness and performance. Zener technology helps keep the rest of the light strand functioning even if a bulb goes out, reducing dark sections and making maintenance easier. Conveniently packaged in a 25-piece set, these bulbs are ideal for quick repairs and keeping your décor looking its best all season long. Each bulb is 2.5 volts