LED: Provides brighter, whiter light, provides enhanced visualization, no heat, no lamp replacement and 5500 degree Kelvin providing true tissue color rendition. Automatic On/Off: for convenient auto on/off when inserted into the specula. Superior Illumination: Results in no glare back/uniform spot. Cordless & Rechargeable: Means no cord to get in the way during procedures, continuous on time of 80 minutes, recharge time 6 hours, lithium ion battery technology.