The Sony BDP-S3700 is a Blu-ray player that supports various playable media formats such as MPEG-4, AAC, MP3, and JPEG. It has features like HDMI CEC, parental lock, DLNA, and built-in Wi-Fi. The player also has a web browser, Ethernet input, and USB input. It can upscale and upconvert content and supports subtitles. The player has a slow-motion function and a JPEG slideshow feature. It is region code A for Blu-ray.