Gearbits are ancient technology items hidden throughout the Hyper Light Drifter World inside Gearbit boxes.

There is a total of 186 Gearbits: 12 in the Central Zone, 47 in the Mountains (North), 44 in the Lake (East), 46 in the Crystal Forest (West), and 37 in the Barren Hills (South).

Detailed maps and locations can be found on each of the respective pages where each collectable appears.
Note: a guide by Cable, with a numbered list of all Gearbit locations, can be found here on Steam Community.

When 4 Gearbits are assembled, they make 1 Gearbit Pack which are used to buy Upgrades and abilities in the Central Town. After collecting all the Gearbits and buying all the upgrades, you will have 26 Gearbits left over. In New Game+ you will have 98 Gearbits left over.

Once 20 Gearbit packs are obtained, the inventory will automatically gain additional space to store more Gearbit packs.