By Google, their USB Type C to 3.5mm Headphone Adapter. This adapter comes in white. Model: GA00477-WW, G019B.

Features:
- This compact adapter lets you continue to use your favorite 3.5 mm products, from Headphones to Selfie sticks
- Enjoy your favorite tunes on any headphones
- Compact design makes them easy to stow and take with you anywhere you might need them