Garmin/eTrex 30x

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Garmin eTrex® 30x
Garmin eTrex® 30x
Description outdoor navigator (direction;routing)
GNSS ? channels
chipset: ?
DOP: ?
Memory Internal: 3.7GB (10,000 points, 200 saved tracks max logging). External: ? microSD™ card.
Host system ? (operating system: ?)
Display 2.2", 240 x 320 pixels, 65K color TFT
Integrated equipment USB cable
Connectivity mini USB, ANT+®
Batteries 2xAA (25 lifetime)
Yes check.svg addresses Yes check.svg points of interest
Yes check.svg mass storage mode Yes check.svg Waterproof
Price 249€ / $299.99 / £209.99
Website official link Produktseite

General description

Garmin eTrex 30x is an upgraded version of the handheld GPS device eTrex 30. It has color display, supports loadable maps and runs on 2 AA batteries. eTrex 30x supports GPS and GLONASS. It has 3.7GB built-in storage and accepts micro SDHC/XC cards at least up to 64GB.

specification despcription
Display transflective, 65-K color TFT ( 240 x 320 pixels / 65K color)
Display size 1.4" x 1.7" (3.5 x 4.4 cm); 2.2" diag (5.6 cm)
Interface mini USB
Slot microSD™ card
Dimensions (W x H x D) 2.1" x 4.0" x 1.3" (5.4 x 10.3 x 3.3 cm)
Weight 5 oz (141.7 g) with batteries
Battery 2 x AA / 25 hours
Ships with eTrex® 30x, USB cable & Documentation
Misc GPS & GLONASS, 3-axis compass, barometric altimeter

Sharing data between two GPS units wirelessly

You can exchange tracks and other info with another eTrex or Oregon device (Edge devices does not seems to work), this is done using Ant+.

To do so:

  1. Select Share Wirelessly in the "Power Key Menu"
  2. Select Receive for the device that should receive the data
  3. Select Send for the device sending the data and then further select what to send
  4. Follow further the on-screen instructions

Current consumption

With a voltage of about 2.7 Volt (NiMh batteries) the current consumption is about:

  • 55 mA without back-light
  • 60 mA for 3 ticks up (which is enough for me with darkness)
  • halve-way 80 mA
  • full back-light 140 mA

All measurements are done with the GPS static and locked. The measurements are not really accurate, the current varies and I could only measure multiples of 10 mA, so 55 mA means that the current was varying mainly between 50 en 60 mA.

When the GPS is moving the current consumption is higher. 60 mA with 2200 mAh batteries would mean 36,7 hour operating time.


  1. eTrex® 30x - specifications