BIRUGEAR Hot Pink 3.5mm Metal Stereo Headset Handsfree Soft Gel Earbud with Microphone for Creative Zen X-Fi, Zen Mozaic, Zen Stone Plus, Zen Stone, Zen Vision:M, Zen Vision W, Zen Vision, Zen V Plus, Zen V
They have a hole in the back, so the sound goes out. And it's for phones, so the distance between the ear parts aren't equal. Kind of disappointing.