Wearhaus' Arc social headphones are clever: you can share a new song with your friends without asking them to plug in or borrow your gear. However, not everyone can use over-ear cans -- you aren't about to bring the Arc on a run just to broadcast a few tunes. Thankfully, you don't have to. Wearhaus is crowdfunding the Beam, which crams that social experience into a set of fitness-friendly earbuds. They still include Bluetooth-based music sharing (including to Arc owners) and color-changing light rings -- they're just much smaller and sweat-resistant. If you want to share tracks with a gym buddy or just don't want to be quite so conspicuous at a silent disco, this is your better option.