They could make a simple, light, cheap, waterproof one, without the useless maps or power hungry color screen, and make it yellow so you could find it and have it run for 24hours on 2AA batteries.
WARNING & DISCLAIMER:
SELECT AND USE OUTDOORS AND SURVIVAL EQUIPMENT, SUPPLIES AND TECHNIQUES AT YOUR OWN RISK. Information posted
on this forum is not reviewed for accuracy and may not be reliable, use at your own risk. Please
review the full WARNING & DISCLAIMER about information on this
site.