Twitter account DongleBookPro has shared a newly revealed Apple Watch Series 2 prototype that shows that cellular compatibility was initially planned to be launched a year earlier. The prototype shown off by DongleBookPro also has a red Digital Crown, just like the Series 3 watch, which was the first shipping model with cellular.

While this prototype is primarily important for its cellular functionality, it also is shown in an unreleased gold stainless steel finish. Apple didn’t release a gold stainless steel Apple Watch until the Series 4 about two years later. With the Series 2, the company scrapped the 18K solid gold edition models and replaced them with a far more affordable ceramic model. The stainless steel Apple Watch Series 2 only shipped in silver and space black.

DongleBookPro says that Apple ultimately scrapped cellular in the second prototype of the Apple Watch Series 2 because this particular prototype overheated constantly because of the onboard modem. The prototype shown off in these images was quite early on in the development process, but Apple still engraved the words “Series 2” on the back above the crystal. It’s also running test software rather than watchOS with an entirely different interface.

You can see more photos of the prototype in the tweet embedded below!

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Parker Ortolani

Parker Ortolani is a marketing strategist and product designer based in New York. In addition to contributing to 9to5mac, he also oversees product development and marketing for BuzzFeed. A longtime reader, Parker is excited to share his product concepts and thoughts with the 9to5mac audience.