San Francisco - Apple CEO Tim Cook said on Monday demand continued to outstrip supply for the new Apple Watch, released earlier this month.
"From a demand point of view, it's hard to gauge when you don't have product in stores," said Cook.
He said the iPhone "led the way" in its massive increase in China sales.
The company on Monday announced a quarterly revenue of $58bn and quarterly net profit of $13.6bn with international sales accounting for a 69% of revenue.
The iPhone and App Store remains the company's growth engine.
"We're seeing a higher rate of people switching to iPhone than we've experienced in previous cycles, and we're off to an exciting start to the June quarter with the launch of Apple Watch," said Cook.