Casio G- SHOCK celebrated their 30th anniversary with a performance by Eminem and with a press conference featuring special guests James Marsden, Jessica Stam and Brook Lopez, where three exclusive timepieces were presented: MTG, Rangeman and GDX6900. Post press conference, press and guests were treated to hor d'ouevres and cocktails. Starting at 9pm, guests enjoyed DJ Mick Boogie while celebrities such as Vincent…