Swiss watch exports jumped again in June as demand for pricey luxury timepieces from the US and China stayed strong.

Shipments surged by 14% last month to 2.4 billion francs ($2.8 billion), the Federation of the Swiss Watch Industry said Thursday. The increase underscores continued demand for expensive watches from brands including Rolex, Omega, Patek Philippe and Vacheron Constantin despite concerns that shaky economic growth and higher prices might stall consumer interest.