Quantity   Component name
1 × ATtiny3227
1 × 32.768kHz Crystal
2 × 18pF Capacitor
1 × 1uF Capacitor
1 × 100nF Capacitor
12 × LED Red
4 × 2k-ohm resistor
2 × Tactile switch
1 × SPDT slider switch
2 × 1x12 Female Socket Connector SMD
1 × CR2016 Coin Cell Battery Holder
1 × CR2016 Coin Cell Battery