Quantity   Component name
1 × 3.5mm Jack female connector SMD SJ2-35954D-SMT (https://www.cuidevices.com) Series or similar. Look for in ebay, 6 pin connectors
1 × 2 pin PCB header male Standard 2 pin header, 2.54mm or 2mm pitch. Or any other small 2 pin male connector
1 × 2 pin connector female (wire) Standard 2 pin female connector, 2.54mm or 2mm pitch. Or any other small female connector with wire.
1 × Shrinking tubes