Early adopters of Halo 5: Guardians will be able to unlock a bonus Teishen Raikou Armour Set for use in the game, Microsoft has revealed.

The new copper-coloured suit is teased at the end of the game's launch trailer, and will be available to all Xbox Live Gold members who play the game online before November 7, 2015.

It isn't clear whether the suit will also be available to unlock or purchase separately following November 7.

Halo 5: Guardians launches exclusively on Xbox One on October 27, although copies already appear to be in the hands of at least one US retailer.

To check out the full launch trailer, take a look below.