2.5v Xenon lamp for true tissue color. Wide angle swivel 2.5x viewing lens permits instrumentation. Insufflator port (fitting and insufflator sold separately) for pneumatic otoscopy. “AA” battery handle (batteries included) with on/off power switch integrated into pocket clip. Includes tube with 5 each Welch Allyn 2.75mm and 4.25mm specula. 1 year instrument warranty, lifetime warranty on optics.