Quantity   Component name
1 × BC-2001 CR2032 battery retainer
1 × ATtiny10 8-bit ATtiny microcontroller
1 × 100nF capacitor 0805 SMD MLCC capacitor
1 × 4.7μF capacitor 0805 SMD MLCC capacitor
1 × KMTG1261 SMD piezo transducer
1 × SM05T1G Dual common-anode ESD protection zener diode
1 × FSMSM Mini SMD tactile switch
1 × JS102011SAQN Mini SMD slide switch
1 × 0.1" header 5 pins long