Trust SILVERLINE COMPACT HEADSET. Device connectivity: Wired. Headphone frequency: 50 - 16000 Hz, Headphone sensitivity: 101 dB. Microphone frequency: 20 - 16000 Hz, Microphone sensitivity: -54 dB. Dimensions (WxDxH): 115 x 170 x 65 mm, Weight: 93 g. Package dimensions (WxDxH): 175 x 75 x 240 mm, Package weight: 160 g