The BD-S677 has the following advantages/differences over the BD-S673.
1. ALAC (Apple Lossless format) support.
2. High resolution audio 192kHz/24bit FLAC playback compatibility
3. Miracast compatibility for enjoying a variety of media from a smartphone or tablet
4. VUDU compatibility for video on demand (for USA only)
5. Dropbox compatibility for accessing to stored contents
6. SACD playback.
7. BD-S677 has no Component Video output or Composite Video output
8. BD-S677 does not have Netflix.
Dimensions and Weight are the same.
17-1/8" x 3-3/8" x 10-1/8"
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