2 ms·Škoda DuoBell – The Bike Bell Designed to Penetrate Noise-Cancelling Headphones [video]3 points by SockThief 6mo agoSockThief 6mo agoSorry, it's a dupe of: https://news.ycombinator.com/item?id=47687248 https://news.ycombinator.com/item?id=47687248