From Halopedia, the Halo wiki
A some point between November 2551 and December 2552 a Mark V version of the armor was available.
The Tracker helmet has an anti-flare vision shroud that covers nodes as well as a tricloptic node cluster that improves target tracking. The suit has a strain resistant reactor case to mitigate gravity-induced trauma. It also features an energy stack funnel that dynamically adjusts shield resilience.
The suite includes satellite link feeds, persistent silhouette-locking agents, and cloud-induction tracers.
The Tracker variant is manufactured by Acheron Security and tested at Acheron Trauma Sim. It is intended primarily for long-range tracking of targets, including the following of targets off-world and between continents.
ONI field operatives make use of several optional peripherals that augment the TRACKER suit's analytical capabilities. ONI asset recovery specialists make extensive use of the TRACKER armor's biological and information forensics functionality to locate their assigned targets - whether man or machine.
Tracker was first introduced into the Halo games as an armor set in Halo 4. The armor has one available skin, Adroit (ADRT). As with all Halo 4 armor, the skins were not included in the initial release of Halo: The Master Chief Collection, though the release of Halo 4 on PC and the start of Season 4: Reclaimer saw the skin added into the collection as default unlocks.
Halo 5: Guardians
The Tracker returns in Halo 5: Guardians. The helmet and body armor are unlockable as armor permutations through the Requisition system. The body armor includes the Tracker chest and shoulders, the Ricochet forearms, and Recruit legs. The Tracker set has no alternate skin designs.
Screenshots and renders
Halo 5: Guardians skins
List of appearances