This is an excellent otoscope that functions really well. We sell very nice Professional otoscopes on Amazon and none have anything on this fellow. Same magnification and focal length as the W/A so what you see is just as clear if not clearer due to the very bright led light. LED"s contains no fragile filament like incandescent bulbs. We tried making this bulb go out and could not do it. This included dropping the otoscope from a second story window onto the ground. It lit right up brighter than ever. Bottom line: If you are looking for an otoscope for home use you will not find a better value anywhere. Includes 3 sizes of specula for Adult, Child and Infant. Very nice size and packs easily in a mom"s purse or overnight bag for travel. Do not leave home without it. Please take our word, we have been selling otoscopes on Amazon for over 5 years......There is no better value anywhere when it comes to an otoscope. Why we love this otoscope: 1. Works well with Disposable Specula. 2. The LED light source contains no fragile filament and is impervious to shock or trauma. 3. No hunting all over for bulbs for an off brand otoscope you bought several years before from a fly by night seller. If you don"t find a matching bulb your otoscope is useless from that point on. 4. No price gouging to buy a bulb from the large well known brand that will cost more than this entire otoscope. A bulb that will need replaced on a regular basis and even sooner if the otoscope is ever dropped or handled rough in any way. 5. Same magnification and focal length as the Welch Allyn so what you see is just as clear if not clearer due to the very bright led light 6, Very informative weblink with high resolution photos of both normal and diseased eardrums and detailed use instructions written by an ER Physician. Be sure to see over 10,000 reviews on eBay with 99.9% being positive.