LOGITECH Corded USB Headset H540 - USB - EMEA (L981-000480) Model name: - H540 Type: - On-ear headphones Headphone Connectivity Technology: - USB Headphone Type: - On-Ear Microphone: - Yes Frequency: - 20 - 20 000 Hz Sensitivity: - 115 dB Impedance: - 20 Ohm Microphone Frequency: - 100 Hz - 16 KHz USB Q-ty: - 1 Headphone Cable Length: - 1.8 m Color: - Black Dimensions (W x H x D): - 215 x 180 x 78 mm Weight: - 120 g