This is a Snowden-Pencer surgical headlight headset, model 89-8461. The unit features a comfortable, adjustable padded headband designed for extended use in medical or surgical settings. It includes a fiber optic cable for connecting to a light source. This lot also comes with a Keeler instruction CD and various attachments, including power adapters, as pictured. Main Unit: Snowden-Pencer Surgical Headlight Headband Model Number: 89-8461 (Serial No. 24351) Cable Part Number: Snowden-Pencer P/N 89-8464 Includes: Keeler Vantage Plus & Spectra Plus instruction CD and various attachments shown