It's wider though, and surely going to weigh more...

A lot more. Almost twice as much (+80%).

  Height
  4.64 inches (117.8 mm) closed / 4.64 inches (117.8 mm) open
  5.18 inches (131.5 mm)

  Width
  3.31 inches (84.1 mm) closed / 6.48 inches (164.6 mm) open
  2.53 inches (64.2 mm)

  Depth
  0.44 inch (11.3 mm) closed / 0.21 inch (5.2 mm) open
  0.30 inch (7.65 mm)

  Weight
  8.96 ounces (254 grams)
  4.97 ounces (141 grams)