Global Positioning Systems (GPS)

Kudoo GPS Electronic Altimeter, Portable Multifunction Handheld Device, Temperature Humidity Altitude Meter Barometer Compass With Flashlight Function IPX4 Grade Waterproof for Hiking Surveying GPS dual system compatibility, two star positioning function, speed, distance, 9 sets course reversal/return records. Height gain/loss, 7x 24 hours historical height data/curve recording. Height change interval prompt, can set range of 1~200 meters.... Kudoo GPS Electronic Altimeter, Portable Multifunction Handheld Device, Temperature Humidity Altitude Meter Barometer Compass With Flashlight Function IPX4 Grade Waterproof for Hiking Surveying