White noise sleep headphones help you to sleep with preloaded ocean/ stream/ birds etc sleep music. Can be set to 30/60/90. You can connect to your cell phone or other Bluetooth devices to listen to music as any other headphones. Can receive and reject phone calls. Automatically shut off if not used for more than 5 minutes. Rechargeable and comes with USB C cable and manual. I only used this for testing and is washable.