The Lumos Ultra smart helmet has been in the news thanks to its highly successful Kickstarter project, which still has a week left to run on it. The smart bike helmet has attracted over US$2.2 million from backers. The Lumos Ultra has integrated LEDs for turn signaling and can be operated via an Apple Watch or the included wireless handlebar remote.
https://www.notebookcheck.net/Lumos-Ultra-smart-helmet-Apple-Watch-compatible-turn-signaling-bike-helmet-attracts-over-US-2-2-million-in-crowdfunding.481068.0.html