Overview:4 levels of volume control Comes with 3 differently sized ear pads Powered by 1 x AG13 battery (included 2 pack) Maximum loudness 130 /- 5d B Sensitivity: gt;= 50d B Frequency response: 300 Hz ~ 4000 Hz Comes in retail packaging Specification: Weight Approx:82g Size Approx:10 x 7.5 x 3