It says the band size is Mens Standard; How long is the band and is there a larger size or extension available?

This band comes with deployment buckle which gives enough length for larger wrist

Does this watch come with a black band?

This watch comes with a brown strap. Yellow gold-tone stainless steel case with a brown (croco-embossed) leather strap. Fixed yellow gold-tone stainless steel bezel. White textured dial with luminous yellow gold-tone hands and Roman numeral hour markers. Minute markers. Tachymeter markers around the outer rim. Dial Type: Analog. Luminescent hands. Date display between the 4 and 5 o'clock positions. Chronograph - three sub-dials displaying: 60 second, 60 minute and 1/10th of a second. Quartz movement. Scratch resistant domed mineral glass crystal. Pull / push crown. Solid case back. Round case shape. Case size: 46.5 mm. Case thickness: 12.3 mm. Strap width: 21 mm. Deployment clasp with a double push button release. Water resistant at 30 meters / 100 feet. Functions: chronograph, date, hour, minute, second. Casual watch style. Bulova Classic White Textured Dial Mens Chronograph Watch 97B169.