Garmin eTrex 20 User Manual

38 owner’s manual for use with models 10, 20, 30
Device Information
EN
Device Information
Adjusting the Screen
NOTE: The backlight brightness
may be limited when the remaining
capacity in the batteries is low.
Extensive use of screen
backlighting can signicantly reduce
battery life.
1. While the device is on, press .
2. Move the Thumb Stick left and
right to adjust the brightness
level.
3. Move the Thumb Stick up and
down to adjust the contrast
level (eTrex 10 only).
Adjusting the Backlight
Timeout
You can decrease the backlight
timeout to maximize battery power.
Select Setup > Display >
Backlight Timeout.
Updating the Software
Before you can update the
software, you must connect the
device to your computer (page 42).
1. Go to http://www.garmin.com
/products/webupdater.
2. Follow the on-screen
instructions.
NOTE: Updating the software
does not erase any of your data or
settings.
Viewing Device
Information
You can view the unit ID, software
version, and license agreement.
Select Setup > About.

Garmin eTrex 20 Specifications

General

Outdoor (hiking, trekking)	Yes
Marine (chartplotters, sounders)	No
Routes quantity	200
Number of waypoints	2000
Form factor	Handheld
Display diagonal	2.2 \
Display resolution	176 x 220 pixels
Display number of colors	65536 colors
Display size (HxV) (imperial)	1.7 x 1.4 \
Internal memory	1740 MB
USB 2.0 ports quantity	1
Battery type	AA
Battery life (max)	25 h
Battery technology	Nickel-Metal Hydride (NiMH)
Number of batteries supported	2

Weight and Dimensions

Depth	33 mm
Width	54 mm
Height	103 mm
Weight	141.7 g