However, preventing the use of typical Bluetooth headphones is frustrating as this means you'll need to buy a brand-new accessory to get wireless playback rather than simply using a pair of Bluetooth headphone you likely already have. Furthermore, the Pulse Explore Earbuds are expensive at $200, which is the same price as the Portal itself! Fortunately, there is a standard 3.5mm headphone jack behind the Portal's screen that can be used with any pair of wired headphones.