Following recording breaking iPhone sales, Apple Inc. set a more specific date for its next big product, the Apple Watch.

“Development for Apple Watch is on schedule and we expect to ship in April,” Apple CEO Tim Cook said during its earnings call on Tuesday.

Though Apple introduced its new wearable with its iPhone 6 and 6 Plus in September , the company remained quiet about its launch date, vaguely pegging it for an early 2015 date. However, Cook’s remarks confirm an earlier leaked transcript from Angela Ahrendts, Apple senior vice president of retail and online stores, who told retail employees in November that she expected the Apple Watch to launch “in the spring.”

“I’m using it every day, love it and can’t live without it,” Cook said about the Watch in response to an analyst's question. But there are some concerns about the watch, including its battery life, which may fall short of the company’s expectations. During heavy use, the Watch is expected to last between two and a half and four hours, according to unnamed sources speaking to 9to5Mac.

Despite some doubts behind the wearable device, Apple Watch is still expected to sell. UBS predicts the company will ship upwards of 24 million units. And even at the low end of 15 million, the Watch may sell more than the first year of Apple’s iPad sales, which topped 14.8 million in 2010.

The Apple Watch is expected to start at $349 for the Apple Watch Sport and run as high as $5,000 for the 18-karat gold Apple Watch Edition. It will come in two sizes, 38mm and 42mm.