Garmin eTrex 10
Highlights
It's a basic, rugged GPS unit with a monochrome display.
It uses both GPS and GLONASS satellites for accurate positioning.
The eTrex 10 is water-resistant and durable, suitable for outdoor use.
It stores data in GPX file format, compatible with various computer applications.
It has a worldwide basemap and an intuitive interface.
It is often used for hiking, geocaching, and surveying.
It runs on two AA batteries.
It is available for purchase in Dar es Salaam.