McDonald's is offering a new 60-second lunch guarantee at its drive-thrus.

McDonald's guests at participating South Florida restaurants will receive timers when paying for their order in the drive-thru. The timers are then returned to the McDonald's crew member when their food is presented. This guarantee promises that customers will receive their meal within 60 seconds of paying for it, or receive a complimentary lunch item on a future visit.

The limited time promotion will run Monday – Friday from noon to 1 p.m. through Aug. 29, in the drive-thru only, McDonalds said.