Pitt Street Mall is the pedestrianised section of Pitt Street in the Sydney central business district, in the Australian state of New South Wales. Running for approximately 200 metres between Market Street and King Street, it is one block long and one of Australia's busiest and most cosmopolitan shopping precincts. Floorspace rents are the highest in Australia, in part due to other cities' shopping precincts being longer. In 2015, its rents were the fifth-highest in the world in terms of city streets.

Despite its small size, Pitt Street Mall hosts many flagship chain stores and more than 400 specialty stores. It is one of the flagship venues of Sydney Fashion Week held in the month of May.
Given a reference text about the Pitt Street Mall, tell me how big it is and how many specialty stores it has.
The Pitt Street Mall is 200 meters long and has more than 400 specialty stores.