This type of enclosure is built around LilyGO® T-Echo board.

NOTICE: This design is applicable for pre-production sample of the T-Echo. Other revisions may or may not match.

The enclosure is designed to fit for a 40 x 30 x 8 mm 1000 mAh Li-Po battery.

3D print two STL files from this folder: Body and Face. You may pick some printing advisories on my Thingiverse page.
If you are unable to print the parts by yourself - you may consider to find an appropriate local 3D service provider and place an order with assistance of Treatstock or 3DHubs portals.

1. connect GNSS antenna to the board ;
2. connect SMA pigtail to the board ;
3. connect battery to the board with JST 1.25mm 2pin female plug ;
4. place the battery first ;
5. then place T-Echo board into the enclosure's main body ;
6. fasten the board with two 2.5x10 mm screws.
7. put lid on top of the assembly.

This variant of the Body part is designed to fit for a 20 mm wrist or neck strap.