WeSC Banjar IFC headphones. Hands-free with microphone and remote control. Compatible for use with devices with a 3.5mm jack such as iPhone, Blackberry, Samsung, and HTC. 40mm power drivers. 1kHz sensitivity: 110 dB. Impedance: 32 Ohms. Frequency range: 20-20000 Hz. Plug: gold-plated 3.5mm stereo. Cord: 1.1m + 1.0m extension PVC cord. Imported.