Virtual reality
VR is most commonly used in entertainment applications such as gaming and 3D cinema. Consumer virtual reality headsets were first released by video game companies in the early-mid 1990s. Beginning in the 2010s, next-generation commercial tethered headsets were released by Oculus (Rift), HTC (Vive) and Sony (PlayStation VR), setting off a new wave of application development. 3D cinema has been used for sporting events, pornography, fine art, music videos and short films. Since 2015, roller coasters and theme parks have incorporated virtual reality to match visual effects with haptic feedback .
H2O Audio
H2O Audio was started as a graduate student project at San Diego State University by a SCUBA diver who wanted to take music with him while diving; hence the company was originally named Diver Entertainment. In 2002, the first patents were approved, followed by the development of waterproof technologies in 2003. By 2004, the first underwater SCUBA product was shipped. In 2005, the company moved into developing waterproof headphones and cases for MP3 players, including iPods. 2007 was the year Olympic swimmer Natalie Coughlin was brought on as the first official H2O Audio Ambassador, and in 2008, big wave surfer Laird Hamilton was also named an official H2O Audio Ambassador. Currently, Laird Hamilton has his own signature version of Surge Headphones. In 2009, Olympic swimmer Michael Phelps also became an official ambassador of the brand, along with triathletes Greg and Laura Bennett.