Start with the news release Omron switches feature see-saw mechanism from Omron Electronics, which we summarised at the time by saying "A new range of switches from Omron features a see-saw mechanism that offers a positive operational feeling combined with a quick electrical changeover, with minimal risk of sparks and chattering.". Several months prior to that, we featured the news release Intersil unveils ISL54222A integrated circuit from Intersil: "Intersil Corporation has introduced an integrated circuit that offers features for portable products where internal USB high-speed ports may need to share a single USB connector.".
 
In June 2009, we covered the news from Intersil - take a look at Intersil unveils flexible ISL54230 Octal switch which says: "Intersil has introduced the ISL54230 Octal switch, which is suitable for high-end Smartphone applications. ".
 
Take a look also at the news release from Cherry Electrical Products, Cherry rocker-switches resist water and dust, as well as Cherry Electrical offers waterproof switches from Cherry Electrical Products, and Cherry releases KD and KC round rocker switches from Cherry Electrical Products.