Apple’s first wearable, the Apple Watch, will become available in April, the company said during a record-breaking earnings call on Tuesday in which it announced the highest sales and most profitable quarter in its history.

“My expectations are very high on it,” Apple CEO Tim Cook told Wall Street analysts, saying the smartwatch is “right on schedule” to ship. “I’m using it every day and love it and can’t live without it,” he added.

Cook teased that consumers will see “some incredible innovation” from the device, who has a number of companies designing apps for the smartwatch, including BMW, hotel operator Starwood and American Airlines. The device was first unveiled in September.

As its prepares to launch its first new product since the iPhone and iPad, Apple posted record numbers.

Apple reported $74.6 billion in first quarter revenue, a gain of 30%, and 38% surge in profits of $18 billion, topping even its own expectations. Sales were up 70% in China to $16.14 billion, compared to the same period a year ago.

Record sales of its new line of iPhones drove much of the results, with the company moving 74.5 million iPhones, 21.4 million iPads, and 5.52 million Macs out of stores. The company no longer reports iPod unit sales.

The December quarter was the first one in which the iPhone 6 and 6 Plus models were available.

“We’d like to thank our customers for an incredible quarter, which saw demand for Apple products soar to an all-time high,” Cook said. “Our revenue grew 30% over last year, and the execution by our teams to achieve these results was simply phenomenal.”

Cook also said that Apple shipped the 1 billionth device running on its iOS operating system on Nov. 22. It was a Space Gray 64 gigabyte iPhone 6 Plus, “which we’ve saved here at Apple,” he said.

The record quarter sent Apple’s stock up $6.26 or 5.7% in after-hours trading on Tuesday. The earnings were announced after Wall Street had ended trading, during which Apple’s shares declined 3.5% to close at $109.14.