2012 NISSAN ALTIMA 4C 4D SEDAN SL PREMIUM PACKAGE LEATHER MOONROOF, The 2.5 SL package for the sedan adds Leather upholstery, Heated front seats, an auto-dimming rearview mirror and rear A/C vents. The Convenience Plus package sedan adds mirror-mounted turn-signal repeaters, a Moonroof and dual-zone automatic climate control. The Premium Audio package adds a Rearview Camera and a nine-speaker Bose stereo with satellite radio and an iPod interface. The Premium package combines all the options above. Also included on this Altima, keyless entry, air-conditioning, cruise control, full power accessories, a tilt-and-telescoping steering wheel and a trip computer.