Interface: USB Resolution: 800 - 1200 - 1600 DPI Cable length: 1.8 m Number of buttons: 3 + DPI

Type of speaker: 2.0 Power output (RMS): 2 x 5W Frequency response: 20Hz-20000Hz Magnetic shielding: Yes Headphone output: NO Power supply: 240V Built-in power supply Pilot: Lack Color: Black Speaker dimensions (height/depth): 147x95x74mm

Sensor model: Optical (Pixart P3327) Interface: USB DPI: 1000 / 1500 / 2500 / 3000 / 5500 / 6200 Cable length (m): 1,8 Number of buttons: 6 programmable buttons Color: Black Stroke height: 0.7 mm Actuation force: 70±-5g Button lifetime: 20 million clicks More information:  RGB backlight Max acceleration: 30 g ...

Headphone type: On-ear Number of channels: 7.1 Cable length: 2 m Connector: USB 2.0 Volume control: Yes Microphone: Yes Microphone sensitivity: -38±3dB Frequency response: 20Hz - 20kHz Headphone effectiveness: 117±3dB Impedance: 32Ω Color: Black Weight: 340 g

Headphone type: On-ear Cable length: 2 m Connector: 2x mini jack (3.5 mm), USB Volume control: Yes Microphone: Yes Microphone sensitivity: -42±3dB Frequency response: 20Hz - 20kHz Headphone effectiveness: 108±3dB Impedance: 32Ω Color: Black and Red Weight: 345g

Interface: USB Resolution: 1000 DPI Cable length: 1,5 m Number of buttons: 3

Cable length (m): 1.2 Connector: Minijack (3.5mm) Call answer button: Yes Microphone: Yes Frequency response: 20Hz-20kHz Headphone performance: 103 ±3 dB Color: Black and Blue