Yes they exist. There is a community of investors here in Hong Kong with consumer goods experience, who are putting money into IoT projects. If you are in Hong Kong (or willing to travel/move here), you can get in touch with them through the HK Business Angels Network, The Entrepreneurs Network, or TiE. If you have the budget to travel, I can put in pitches to HKBAN.
Alternatively, you might want to first contact a sourcing company like Global Sources or Berkeley Design Group. They provide the manufacturing know how and they are starting to get links with angel investors.
Having said that, HK investors are a really tough crowd. People have a lot of consumer goods experience so that they know how really painful it can be, but that's useful because you can often get feedback on why you idea won't work.
The trouble with watches is that a lot has to do with fashion and marketing niche. Most people that do watches here in HK, focus on the luxury market because the margins are higher and there are people that will pay extra for something that is both high quality and hand made.
Once you try to scale up, you run into problems because the cost of setting up manufacturing can be high, and once you've created a watch that is a commodity, the sales value of the watch goes to zero. So the issue is to come up with some sales angle that keeps the value of the watch high, and people have been trying to do this (and mostly failing) by doing smart watches or sports/fitness devices. Another angle is custom watches - see https://www.eoniq.co/