ACCURATE NAVIGATION GPS dual system compatibility, two star positioning function, speed, distance, 9 sets course reversal/return records.ACCURATE NAVIGATION GPS dual system compatibility, two star positioning function, speed, distance, 9 sets course reversal/return records.MULTI-FUNCTION It shows many important data such as temperature, humidity, time, date, alarm clock, flashlight function, built-in rechargeable lithium battery, IPX4 waterproof grade.HEIGHT GAIN/LOSS 7x 24 hours historical height data/curve recording.Height change interval prompt, can set range of 1-200 meters.ELECTRONIC COMPASS FUNCTION Height target reminder settings, historical height data analysis, temperature and humidity records, 24 hours air pressure trend curve display, 16 azimuth electronic compass function.WIDELY APPLICABLE User-friendly, with many function buttons on the side to makes you quickly change mode or search for data. Widely applicable to many uses, hiking, climbing, camping, etc. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.