Passage: East Falkland, which has an area of 6,605 km2 (2,550 square miles), a little over half the total area of the islands consists of two land masses of approximately equal size. The island is almost bisected by two deep fjords, Choiseul Sound and Brenton Loch-Grantham Sound which are separated by the 2.2 kilometres (1.4 mi) wide isthmus that connects Lafonia in the south to the northern part of East Falkland. The island's 1,668.7 km (1,036.9 miles) coastline has many smaller bays, inlets and headlands.The northern part of the island, apart from the coastal strip bordering the Choiseul Sound is largely underlain by Palaeozoic rocks in the form of quartzite and slate, which tend to form rugged landscapes and coastlines and to cause the soil to be poor and acidic. The principal range of hills, the 600 m (2,000 feet)  Wickham Heights runs from east to west.  The highest point of the range (also the highest point in the Falklands), is Mount Usborne which has a height of 705 m (2,313 ft).  The area away from the mountain range consists chiefly of low undulating ground, a mixture of pasture and morass, with many shallow freshwater tarns, and small streams running in the valleys.   Two inlets, Berkeley Sound and Port William, run far into the land at the north-eastern extremity of the island and provide anchorage for shipping.

Question: How many meter above sea level is Mount USborne?
705 m