What type of dock connection does the sounddock series III have? 
CREATE TABLE "features_comparison" (
  "version" text,
  "dock_connection" text,
  "aux_in" text,
  "battery" text,
  "i_phone_certified" text,
  "video_out" text,
  "dual_voltage" text
);
SELECT "dock_connection" FROM "features_comparison" WHERE "version"='SoundDock series III';