A:Answer Hi Amanda,
Thank you for your question. No, these headphones do not automatically turn off when you lay down. You can Select [Automatic Power Off] from the Dashboard of the Sony | Headphones Connect app to set the time until the headphones turn off automatically, but lying down while wearing these headphones won't trigger this function.
Additional information:
Get even closer to your favorite music with the exceptional bass performance and noise cancellation of the WH-XB910N wireless headphones with EXTRA BASS™ and Dual Noise Canceling technologies. For total convenience, WH-XB910N headphones with Multipoint connection can be paired with two Bluetooth® devices at the same time. With up to 30 hours of battery life, you’ll have enough power for multi-day road trips and long festival weekends. And if you need to top up in a hurry, 10 minute quick charging gives you up to 4.5 hours of extra play time with the optional AC adapter.
I hope this helps.
Best regards,
Romeo