The Ototemp 3000 Special Duty Tympanic Thermometer was designed specifically for field use in harsh, demanding environments, with proven performance at numerous Marathons, Olympic Games, and in Desert Shield. It is the instrument of choice for military and sports medicine. Also, any outside activity where thermoregulation function could be at risk. The kit includes a waterproof carrying case, 500 disposable probe wraps, neck strap, and spare battery. This model requires the use of a disposable cover (#128800).