Summary

This is my take on Artyom's Watch during Metro - Last Light.
~ Since I didn't get the 1 in 10 Metro Exodus Artyom Edition. >.<

• Print out the Glass Tube in clear filament if you can, or cut to length a frosted bic pen tube.

Go to "https://www.instructables.com/id/Metro-Last-Light-Watch/" to get full progress. Still in beta process.

Electronics:

• 1x 0.36 inch 4 Bits Digital LED Tube Module With Clock Display TM1637 Common Anode
• 1 to 2 x blue leds
• 1 x opaque bic pen (the casing you need for led housing)
• 1 x Adafruit Micro-Lipo Charger for LiPo/LiIon Battery with MicroUSB Jack - v1
• 1 x 3.7V 200mAh 402030 Lithium Polymer Li-Po Rechargeable Battery
• 1 x Arduino nano or Arduino Pro Mini (depending on size of case)
• CR1220 Lithium Battery 3V Button (1 to 3 years of service time)
• 1 to 2 x momentary switch

Items needed:

• 3/32" drill bit to ream out the 8 holes.
• 2.5mm drill bit + m3 tap
• 4 x m3 machine screws, snipped off just under the circuitry holder.

Optional:

• Chisel for edgework to make the circuitry fit in.
• Gluegun if your chiseling is not solid.
• Sandpaper for finish up.
• Bondo or PVC spray-paint to hide the flaws.
• Paint to hide the evidence.
• Rub-N-Buff to add complexity and age.
• Flaunt it to show your a bad-a$$
• Use it in conjunction with your bullet lighter to see your way into the dark tunnels.

Or
You can upload it to Shapeways and forget about it.

*Note:
Opening below the led housing is for resistor if you please.
Is a force fit and the strap holds it together.