Quantity   Component name
1 × Arduino Pro Mini 328 – 5V/16MHz
1 × Waterproof Ultrasonic Sensor
5 × Real Time Clock
10 × Buzzer 5V
10 × B3F-1000 Omron Tactile Switch
50 × Fairchild Semiconductor PN2222ABU Transistor NPN
1 × 7-Segment LED Display - 20mm
1 × Adafruit Micro Lipo USB Li-Ion Charger
10 × 221 ohm resistance
25 × 1k ohm resistance