Quantity   Component name
1 × DS1307 Chip
1 × IC 2x4 Socket
1 × 32.768 kHz Crystal Load-capacitance 12.5 pF
1 × CR2032 Battery and a Battery holder
2 × 1000 Ω Resistors
1 × 2x20 header or better a stacking header
1 × Piece of Perfboard and some Small Wires at least 20x12 holes, better double side perfboard