Material: metalSize: app.148x85x65mm/5.83x3.35x2.56inFeatures:Ultra low noise sound mixer with 8 inputs and 2 outputs.Each input channel with separate volume control knob.And with 2 knobs for adjusting the output volume.Support MIC or LINE (4CH stereo & 8CH mono) input.Compact size and metal shell, portable and durable.Dual power supply: power adapter (included) and 9V battery (not included).Note:Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package includes:1 x Sound MixerNote:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement.The small size drives powerful sound without taking up more precious space.