You may refer to the user guide included in the packaging for instructions on how to wear the earbuds.
You can download the Nothing X App. A quick setup guide pop-up will appear when you connect the device for the first time.
Click the following link to watch the tutorial video. https://cdn.shopify.com/videos/c/o/v/63cf81b9664f4449b6c198240d0a0f9e.mp4