If you're going to be taking you GPS for a walk, you're going to want a small, light weight, waterproof GPS with long battery life. Here are some top rated models that fit the bill.
1. Garmin eTrex Legend CX
Users give this unit high marks for ? It can run for 36 hours on two AA batteries.
2. Magellan eXplorist XL
This waterproof GPS is a reasonable alternative to Garmin. The eXplorist XL is a light weight (5 oz) device with good battery life (18 hrs) that gets good ratings from users.
3. Garmin nuvi 350
This favorite of users and experts alike may be better suited for you car but at 5.1 oz. and an 8 hour battery life, it might be a good companion outside the car.
4. Garmin GPSMAP 60Cx
It weighs a little over a pound but long battery life, a rugged case, and a reasonable price make this a good choice for boaters and consumers on the go.