The rumors of a wearable Apple device continue to gather pace. According to DigiTimes, three suppliers have delivered flexible printed circuit boards to Apple HQ in Cupertino, California.

These would be used as the internals of an ‘iWatch’ device, says the report. The device would offer health and fitness functionality as well as being able to display notifications from certain apps on your wrist.

DigiTimes added that Zhen Ding will be the main supplier of these circuit boards with a supposed $100 million investment due from Apple to ramp up production and meet demand in time for a rumored launch in the second-half of 2014.

The wearable sector is set to explode this year with research firm Canalys predicting that a total 17 million wearable bands could be sold in 2014 alone. Apple will face competition from the Samsung Galaxy Gear and the well received Pebble smart watch, which has sold over 400,000 units so far.

The Pebble smart watch

The Pebble smart watch