With Apple's first foray into the world of wearable tech, the company wanted to create an all-round useful tool that could track your health whilst letting you know what is happening on your phone.
Sources "familiar with the matter" said a number of setbacks in marketing the Watch to the average consumer as a health orientated device caused issues for the company's executives.
Technology issues also set the project back with a number of health and fitness features becoming a "black hole" for sucking in resources as Apple tried to reach its high standards.
A black hole
Sensors for skin conductivity were included in early designs but had to be dropped after things such as the tightness of the strap and hairy arms caused unreliable readings.
The sources also revealed Apple investigated blood pressure and blood oxygen measurement features but decided not to go ahead as readings were inconclusive.
Apple's Watch will launch with a few health based features such as accelerometers, touch inputs and an optical heart rate sensor that feeds directly into the iOS Health app.
The Apple Watch is currently set to launch in April and comes with its own specifically designed UI, Apple Pay integration and a variety of different versions.
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Via Apple Insider