Genuine ghd Mk4 Replacement PCB Circuit Board (Fully Working). Key Specifications Component: Main PCB Control Circuit Board Compatibility: ghd IV (Mk4) Classic Styler, ghd IV Salon Styler, and ghd IV Mini Styler Condition: Pre-owned, stripped from a working unit, and rigorously bench-tested Voltage: Dual voltage (110V - 240V) for worldwide useSafety Feature: Includes built-in automatic sleep mode (turns off after 30 minutes)