Features: One package contains 4 pieces of 06500-u otoscope lamps, which are compatible with macro view, please check the type before ordering. These halogen light bulbs compatible with Welch Allyn are well made and reliable to use, can emit even and bright lights to provide you with a clear vision, the ideal replacements for your otoscope lamps. Specifications: Type: 04900-u Rated voltage: 3.5 v Rated power: 1 W Rated current: 0.78 A Light source type: halogen bulbs Quantity: 4 pieces Package includes: 4 x Otoscope lamps Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays. Please check the size before ordering. All the brands we mentioned just show products adaptability, not worked as trade mark use, our trademark is Funtery, kindly noted.