General video glasses

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http://androidforums.com – I'm looking for video display glasses that can display from my Galaxy S3. This is for gym use. There are plenty that take iPhone input, but I haven't seen any that advertise MHL input. I don't want to use an MHL to HDMI adapter, since the external power requirement there does not work well in the gym, and many of these glasses don't support HDMI, any way. Is there a way to convert MHL to composite video without external power? Or some other way to get a Galaxy S3 to play nicely with the Vuzix Wrap 900, 1200, or equivalent products? There are some display glasses (Epson, Zetronix, and iT (General)