Will detect pressure changes of 1mb has a graphical display of recent pressure movements Auto Illuminator Solar Powered Compass Altimeter Barometer Thermometer Temperature Censor World Time 1/100th Second Stopwatch Countdown Timer 5 Alarms Mute 100m Water Resistant We can now offer our customers the opportunity to recycle their old electrical items that have been purchased from Farlows. To find out more Click Here