Bone Conduction Headphones
When I go for a run, go geocaching, scooter, bike or play disc golf, I like to listen to music, an audio book or a podcast. It's not for everyone, but I find the audio can often add to my experience. Gliding past the roller coaster at the Mission Beach boardwalk listening to Bob Marley, Jimmy Buffet or the Beach Boys ... ahh! But San Diego is a busy place, chock full of other pedestrians, bikers and cars, any of which could sneak up behind, surprise me and make for an unfortunate encounter. For this reason it's important to me to be able to hear what might be coming up behind me and maintain situational awareness . I've experimented with a couple variations on the portable audio to solve the situational awareness problem and they are just "OK". I have one that I wear around my neck. Looks like a black horseshoe (see image below). One shortcoming is that it's fallen off several times and clattered on the pavement. They really aren't designed to run with.