I have Geko 201. Fits inside a celphone waterproof back and thing itself is waterresistant (not that that is not the same as waterproof)

Stores 10.000 trackpoint which is most than all other GPS handhelds

There are really only 2 downsides of the Geko 201. It has a batterij life of about 10 hours and the on/off/backlight button is the same and can easily be accidently pressed. If you accidently turn on the backlight then batteries are dead within 2 hours.

I cut out the plastic case it came in and use that as a keypad cover so you can't not acidently press the on/off/backlight button. Get 800 Ah or 850 Ah batteries and it is an excellent trip logger with 10 hours tracking time with minimal intervals of 1 point per second..

It is a good buy and truy small.

WOuter