Full featured pocket otoscope that offers high quality optics and workmanship. 2.5v Xenon light source for true tissue color and long lasting. lamp performance. Fiberoptics for cool, obstruction free light transmission. Wide angle, swivel 2.5x viewing lens permits. Instrumentation. Includes 5 Welch Allyn disposable polypropylene ear specula in 2.75mm and 4.25mm sizes are convenient, safe, and economical. Pocket clip with integral on/off slide switch for ambidextrous use. Complete instrument includes tube of 5 each 2.75mm and 4.25mm specula. Lifetime Quality Performance Guarantee on optics.