Solar, Dark Green resin construction with polished stainless steel inner surround bezel; Matching colour coded outer surround with black control buttons and tough black resin strap; BAROMETER with measurement & display range - 260 to 1100hPa (7.65 to 32.45 Hg). Display unit 1 hPa (0.05Hg). Measurement timing - Daily from midnight at two hour intervals (12 times per day) ; Calibration - manual measurement (button operation) barometric pressure graph, barometric differential pointer; THERMOMETER; Range -10 to 60 C (14.00 to 140 F) Display unit - 0.1 C (0.2 F); ALTIMETER; Range -700 to 10,000 m (-2,300 to 32,800 ft) without reference altitude; Display range -10,000 to 10,000 m (-32,800 to 32,800 ft) Display unit; 5m (20ft) Measurement timing - Every 5 seconds for first three minutes in altimeter mode, every two minutes after; ALARMS - 5 Daily Alarms, hourly time signal; STOPWATCH measuring in 1/100th second to 23.59 mins, 59.99 secs. Elapsed time, split times, two finishes; COUNTDOWN TIMER; measuring in units of one second with a range of 1 to 24 hours; Blue backlight with auto light switch function. 100 metres water resistant, toughened mineral glass.Two yr Casio warranty.Our price insured delivery