Monica - I am sorry I don't know. I have had these since last year and they are fantastic but unfortunately I threw the box away they were in and just kept the velcroed sleeve I keep them in. I think that you need to get in touch with whoever sells these. Sorry I can't be of more help. Marilyn
By Marilyn on 25 November 2014
It duznt specify on the box or instrution, it does say though if you use them at 120v the heat temerature may vary you can phone and enquire on 0800212438 or e mail email@example.com. my partner just said again there better than her ghd's hope this helps .
By pabs on 28 February 2016