Also commonly referred to as Cooldowns or Time Shards by the community, Hourglasses reduce your Champion's remaining Active Ability cooldown time by 10% (4.5 sec) of the total time (45 secs).
Vital Stats

Bonus / Amount | -10% |
Initial Spawn | Match Start |
Respawn Time | 30 sec |
Visual Timer | False |
Has Floor Marker | False |
First Appearance | Quake Champions |