Uiversal Fit - Works seamlessly with 2-cell AA/C/D flashlights for broad device compatibility.NOT FIT Bi-pin Xenon bulbs or 2-cell C/D Maglites. Superior Brightness - 80-lumen LED emits crisp white light, eliminating outdated yellow incandescent glow. Diverse Applications - Ideal for flashlights, bike lights, work lamps, and indoor lighting (confirm base type prior to ordering). Longevity Guaranteed - Engineered for 30,000+ hours of continuous use with minimal power consumption. Complete Package - 2 premium LED bulbs included, backed by 12-month warranty and responsive customer support team.