Quantity   Component name
1 × Adafruit Pro Trinket 5v. The brains of the opration. https://www.adafruit.com/product/2000
1 × DS1307 I2C RTC The time reference. https://www.adafruit.com/product/264
1 × 0.56" 4-Digit LED 7-segment I2C - red https://www.adafruit.com/product/865
1 × Adafruit PermaProto Breadboard. https://www.adafruit.com/products/723
1 × 6mm push button. https://www.adafruit.com/products/367
1 × Altoids Tin Something to hold it all.