Quantity   Component name
1 × ATtiny85 Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
1 × ISL1208 RTC RTC used to wake ATtiny85
1 × Jumper Electronic Components / Misc. Electronic Components
1 × Jewelry Box Decorative container with false bottom/cavity
1 × 32.768 KHz Crystal Crystal required by ISL1208
1 × CR2450 Coin Cell Battery 620 mAh capacity
1 × CR2450 Coin Cell Holder CR2450 is thicker then CR2032, so requires separate holder
1 × Speaker 16 Ohm, 0.25 W, 1.6 inch diameter
2 × 10 KOhm Resistor
2 × 4.7 KOhm Resistor
1 × Perfboard Or solderable breadboard
3 × Male Header Pins To connect/disconnect power to ISL1208 for programming