Silva ADC summit features a waterproof housing, a large clear LCD screen with full graphic information and graphs and LCD illumination. The Silva ADC summit precisely measures, wind speed ( current, max and average) , temperature ( current, windchill and min windchill) along with having a clock, with date and an alarm and a cronograph with race timer. In addition the Silva ADC summit has a built in altimater/ barometer offering ( current, max, min) , weather forecast and data log memory ( 1984 readings) , and it also compatible with the ADC IR ( optional accessory) for infrared communication with your PC via your USB port. FEATURES: * Waterproof housing * Graphic LCD for info/ graphs * Click on attachment * LCD Illumination * Clock, date, alarm * Cronograph, racetimer * Wind ( current, max, min) * Temp ( current, windchill, min wind chill) * Altimeter ( current, max, min) * Barometer ( current, max, min) * Weather Forecast * Data log memory ( 1984 readings) * Infrared communication with PC ( to optional ADR IR) SPECIFICATIONS: * Wind speed Accuracy: + / - 5% * Dimensions: 11 x 5.5 x 2cm * Temperature range: -20 to + 60 degrees C