Summary

The original one:
https://www.thingiverse.com/thing:2779360

I redesigned it for easy print and CR2025.
It feels great in your hand and pocket. It looks pretty and it is a happy time to build it with other people.

Print Settings

Printer:

Artillery Sidewinder X1

                                            <p class="detail-setting rafts"><strong>Rafts: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>0.2</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>25%</p></div></p>                                                    <strong>Filament:</strong> no name PLA                what you like                    <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><p>I am using 3d lack spray for better adhesion.<br>Print Speed 50 - 60 mm/s.</p></div>

Flash Light Keychain (5 mm LEDs)