The Limited Collector’s Edition contains a full game download and the following Limited Edition Content:

Warzone REQ Bundle: 14 Premium Requisition packs
Halo: The Fall of Reach – Animated Series
Guardian model by Metal Earth
Uniquely-designed Spartan themed SteelBook
Spartan Locke’s Classified Orders
Dossiers on Blue Team and Fireteam Osiris
Xbox Live Gold 14-day Trial - perfect for playing with friends. .
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Features & details :

Limited Collector's Edition includes: full game digital download code + Warzone REQ Bundle (14 Premium Requisition packs) + Halo: The Fall of Reach (Animated Series) + Guardian model by Metal Earth + Uniquely-designed Spartan themed SteelBook + Spartan Locke’s Classified Orders + Dossiers on Blue Team and Fireteam Osiris + Xbox Live Gold 14-day Trial.
Xbox Live subscription required for online play.
Intense story on a galactic scale: Play as the Master Chief and Spartan Locke across three new worlds.
Your team is your weapon: Play solo or with friends in a 4-player co-op experience.
Warzone: New, 24-player massive-scale multiplayer mode