With Its Wide-ranging Versatility, Exceptional Lighting, And Portable Form-factor, The Nsi-iii Is An Ideal Illuminator For The Clinic, The Road, And Anywhere In Between. illuminators Neitz every Application Has Its Specific Demands. Fortunately, The Ns-iii Can Adapt To Nearly Any Situation With An Adjustable Illumination Diameter Ranging From 1.89 Inches To 3.94 Inches. Moreover, Its 3w Led Light Source Provides 3 Differing Intensities Of Cool White Light, Ranging From 13,000 Lux To 40,000 Lux At A Distance Of 9.84 Inches. This Gives Users The Light They Need For Direct Viewing Or For Video/image Capture Using The Sc-i Surgical Camera That Is Compatible With Surgical Loupes By Neitz. illuminators Neitz the Nsi-iii Is Powered By Included Rechargeable Nimh Aa "eneloop" Batteries And Can Deliver The Brightest Illumination Level For 4 Hours. The Nsi-iii Can Run For 7 Hours At The Middle-intensity Level And A Whopping 17 Hours At Low Illumination, Enough To Power Through Even The Longest Days In The Clinic. The Nsi-iii Comes Packaged With A Battery Charger That Can Recharge The Batteries In Just 4 Hours. This Device Can Also Be Used With Standard Replaceable Aas, Giving It The Versatility To Function On The Road And During Outages In Emergency Situations. illuminators Neitz the Nsi-iii Is Compatible With Both The Neo Frame And Standard Headband For The Bl Line Of Surgical Loupes. The Housing Of The Battery Pack Easily Fits Most Jacket Pockets, And The Long Cable Connecting It To The Led Illuminator Makes It Effortless To Use And Carry. This Design Avoids Placing All The Weight On The Nose And Makes It Comfortable For Any Duration Of Use.