What do you mean? A decade ago it was Microsoft SPOT, which could do Microsoft Messenger, weather, stocks and news. Is there something else you're thinking of?
Well, there was Fossil's Wrist PDA that ran Palm OS:
Really? Which wearable, decades ago, had the ability to pair with a smartphone and access the Internet to retrieve information for display?
Wearables decades ago were generally big computer bricks on your waist or otherwise strapped to your body, then a separate display up at your head, and often a separate input in your hand like a Twiddler chorded keyboard. They did tend to range in power and capabilities up to matching laptops of the day, though.
They didn't need to depend on a smartphone. One of Steve Mann's many wearables used radio to base station. He may of later had cellular.
For the people woefully ignorant of wearable history and pathetically incapable of doing their own search...