Lightsource in handle simplifies blade cleaning, allows for use of brighter, whiter light. Satin chrome plated brass handle with a knurled finish for a positive grip. Fully compatible with all standard hook-on blades that conform to ASTM (F965) and ISO (7376-1). Color coded green to signify compatibility ONLY with fiberoptic blades. Batteries not included.- Laryngoscope Fiberoptic Battery Handle, Small "AA" Size Mfr. Direct