iSpecz:
Frequency - 12-20kHz
Driver Diameter (speaker) - 10mm
Plug Type - 3.5mm Gold Plated
Impedance - 16 Ohms
Max Input Power - 10mW (max.)

About iPopperz

Compatible with all iPod, Zune and other MP3 devices, as well as portable CD and DVD Players, iPopperz headphones give the same high quality frequency and response found in full size headphones. Comfortable ear buds design with three earplug sizes included to ensure perfect fit.