Sony's wireless stereo headset allows users to hear both in game audio and voice chat. The headset runs independent of then HDMI, optical and A/V outputs, and instead connects wirelessly via a USB dongle (which can also be used to connect it to a PC or Mac). The headset requires system software update version 3.70. Other features include virtual surround sound (up to 7.1; media dependent) and on screen status notifications. Sony added an app for the PS4 that allows the user to change the sound settings of the headset. Several game developers have created settings just for their games.