With the Awei GM-2 USB + 3.5mm Wired Headset, enjoy rich gaming audio. The ambient lighting gives your gaming setup a stylish touch, and the built-in microphone enables clear communication with other players. Connect using 3.5mm or USB for flexible compatibility. Microphone: 2.2K/20Hz-16KHz (omnidirectional) -42+/-3dB Speaker: moving coil type, 50mm, 20 ohm, 20Hz, and 20KHz 20mW of output power (1KHz 0dB) Ratio of signal to noise: higher than 110 dB Less than 1 percent distortion Use cases include desktop and laptop computers. Operating current: roughly 90 mA USB 5V is the input voltage. Design that is ergonomic and comfortable to wear Weight of One Package: 0.53 kg/1.17 lb Each carton contains one package measuring 21 cm by 12 cm by 24 cm, or 8.27 inches by 4.72 inches by 9.45 inches. Weight of 20 Carton: 12 kg/26.46 lb Size of the carton: 42 cm by 60 cm by 28 cm (16.54 inches by 23.62 inches by 11.02 inches). Container 20GP for loading: 377 cartons * 20