Hi there! Having gone through the "Accessory Design Guidelines for Apple Devices" Release 21 for the material requirement, I got a questions about the permittivity required. On page 28, it is saying that "Materials with high dielectric (permittivity >5 F/m)" should be avoided. May I know if it means RELATIVE permittivity? Since permittivity of most of the materials including metals are with e-12 which is already much less than 1. Thus, it would be more make sense 5 is related to RELATIVE permittivity instead of permittivity. Otherwise, I am afraid most metals could also be used as they are always less than 5 F/m. Or do I miss something? Appreciate all kinds of help. Cheers~