Leaked images show first glimpses at Fitbit's Apple Watch competitor & earbuds

The watch was "originally planned for this spring to likely get ahead of whenever Apple plans their normal fall announcement," a source informed Yahoo Finance. The device has allegedly been delayed until the fall because of hardware issues, including GPS signal and waterproofing. It may also lack a planned app store due to an SDK not being ready in time.

The $300 product is expected to offer many of the same features of the Apple Watch Series 2, including GPS, a heart rate sensor, an aluminum unibody shell, and a display with 1,000 nits of brightness. It should even include some form of wireless payments.

Two distinctive features will be the ability to cache and play music from Pandora — which recently launched its Premium on-demand service — plus a four-day battery life. The Apple Watch typically runs for a day or less on a charge.

Fitbit's earbuds should ship alongside the new watch for $150, resembling Apple's BeatsX headphones in draping around the neck. Two colors should be available, "Nightfall Blue" and "Lunar Gray."

A "Series 3" Apple Watch is expected to be announced later this year. Some rumored features include a faster processor, a better battery, and possibly built-in 4G cellular data, which would theoretically enable full independence from an iPhone.