This is a small 3-key media controller designed for use with Razer-style mechanical switches and a microcontroller (such as an Arduino Pro Micro).
The model consists of three separate parts:

1. Top Plate – holds three Razer switches securely in place.
2. Main Body – features the media icons (Previous, Play/Pause, Next) embossed on both sides.
3. Bottom Cover – closes the housing and provides space for your Arduino.

The parts are designed to snap or slide together, but please note:
I am not an expert in tolerances, so you may need to lightly sand some edges to ensure a perfect fit. A bit of manual finishing greatly improves the assembly.

This design works perfectly with the HID-Project library on Arduino, allowing you to use the keys as real media controls (previous track, play/pause, next track).