Summary: this is the 2nd 101 that i have owned. the first one ate batteries and would shut off. these are the most basic of gpses. the sattelite lock in is not all that super fast but is adequate. user interface is a little cumbersome due to the lack of buttons. i purchased this due to the weight. this is the lightest gps you can buy. i only use it for way points and occasional navigation and for that is works well. there is no interface for computers so everything is manual.
Summary: Don't waste your money one this POS for the following reasons: 1. It takes a long time to find the satellites. 2. When the System or Time option is used, the unit will freeze (tried the hard reset- didn't work). 3. There is no way to update the OS. Zero connections. 4. Tiny screen. I brought this with me to the Great Wall years ago and it worked in China. I wouldn't pay more than $15 for this poorly designed GPS.
Summary: It is water proof but when it dropped from my backpack onto the asphalt (not even two feet from the ground) while I was on my way to the hiking trail from the parking lot it broke, the batteries were new, it didn't even turn on, the screen wasn't even cracked the slightest bit and even after i put some fresh batteries in just to see if it did happen to be the batteries it didn't work even then so if you buy a GPS that you can expect to take a beating do not buy this one
Summary: Simple and easy to use. Controls are on the face of the unit and easily accessible. I use it for marking fishing spots and navigating back to dock. Can be attached easily to any surface & controls are out front for easy access.
Summary: If you can pick one up at a good price, the Garmin Geko 101 is a nice little gps. Signal acquisition is slow, compared to the Etrex, and it's not going to do as well in trees or under other cover. But for basic gps use, it's a fine device, and it's tough to get much better than 3 oz for those who are seeking to save on weight.
Summary: Small size and very light weight make it easy to carry and use. Instructions are clear enough to be able to use with little or no previous experience with gps units. Navigation through pages is relatively easy. Some of the more "powerful" applications are not always explained thoroughly. AAA battery power cause the unit to require fresh batteries frequently. Rechargeable batteries help ease that minor negative.