The Pilot IV series is characterized by a reduced, timeless, and elegant appearance. It includes the CW250010 Chronometer, the CW250011 Barometer, and the CW250012 Thermometer/Hygrometer. Each item in the series is sold separately, but can also be purchased as a complete series. 
CW250012 Thermometer
CW250011 Barometer
CW250010 Chronometer