Zebra OneCare Essential 3-year warranty extension for ZT421 - Basic Assurance with simple and transparent device management: Depot turn-around time: 3 business days from depot receipt Live-agent technical support: Mon - Fri, local business hours Operating system updates (access online) incl. LifeGuard Comprehensive coverage, including normal wear and tear, accidental damage, malfunction, replacement of the print head, and device replacement if repair proves uneconomical. Please note: Service must be purchased within 30 days of device purchase date.