Ghd Curve Classic Wave Wand ghd Curve Classic Wave Wand The ghd Curve Classic Wave Wand is part of the ghd Curve range that features ghd tri-zone technology. The tong features a 38mm – 26mm oval shaped barrel that would be perfect for use on longer hair to form beautiful waves and great movement. The Classic Wave Wand has a protective cool tip allowing the user to hold the hair in a safe place and also features a built-in safety stand. Other key benefits include: Automatic sleep mode of 30 minutes A professional-length cord Universal voltage so you can style on the go