Quantity   Component name
1 × Adafruit Feather nRF52840 Sense Main processor
1 × SparkFun 128x64 Transparent OLED Display Display
1 × 1.2Ah Lithium Polymer Battery Main power source
1 × PS1240 Piezo Buzzer Sound effects and music
1 × SPDT Switch Power switch
1 × ATtiny85 RTC (among other things potentially?)