Is the Apple Watch losing momentum?

Sales usually spike after most high-profile product launches and then tend to trail off. However, according to a recent report from Slice Intelligence, sales of the Apple Watch have plummeted by 90 percent since the product's debut earlier this year.

Slice estimates Apple has been selling between 10,000 and 20,000 watches per day. That's a big drop from its initial spike of 200,000 watches per day.

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Apple did not immediately respond to a request for comment from CNBC.

The tech giant is set to report earnings July 21 after the bell.