Headphones & Headsets features: Computer notebook head-mounted luminous gaming headset(Blue) Color: we send based on the color or size of the main image of the product page. Quantity：we send based on quantity on title, if there is no quantity in the title, we send based on description. Colour:Blue Color classification: black blue black green Plug diameter: 3.5mm Headphone output source: portable audio and video Connection method: wired connection headset and playback device Connection method: wired connectionDriver: 40mm diameter Impedance: 15% 32 ohm ± Sensitivity: 105db + / - 3dB 1kHz Frequency range: 15hz-20khz Size: 6 × 5.0mm MIC Microphone sensitivity: -38 dB + / - 3dB Microphone impedance: 2.2kohm Directionality: all-round Cable length: about 0.15 2.1m ± LED operating voltage: DC5V ± 5% Working current: 100ma below. Headphone jack: 3.5mm (4pin) + USB (USB LED light) Headphone size: approx.95 * 215 * 3.7 * 8.5 * 8.1in 205mm Packing size: 213 × 200 × 105 mm / 8.4 × 7.9 × 4.1 in In Parcel: 1 * GM-1 headphones