The charm size:about 1.4cm/0.55inch,length:it is adjustable,fit for any normal sizes wrist. Material:Alloy and rope chain. Any questions freely contsct us,we will reply you within 24 hours.We will refund you or resend new one for quality problem. Tip:the procects are authorize by Yocoyee brand,which register with authority.We will take action for any illegal violation!