Pyle PHPMD23 Metal Detector Headphones 3.5mm universal connector: the pylesport metal Detector headphones feature 3.5mm ( connector) universal standard Headphone Jack that works perfectly with Pyle metal detectors as well as other brands. It has ability to be used as standard headphones Adjustable volume: this metal Detector headset earphones is equipped with an in-line adjustable volume control that is within your arms reach, allowing convenient and hassle-free volume adjustments while youre busy looking for Precious items Comfortable design: features comfortable over-the-ear design with engineered sound insulation padding on both ear pieces providing you outstanding comfort while using the headphones for hours. Works w/ smartphones, MP3 players, tablets, etc Lightweight: with its lightweight design, you will even forget youre wearing it! the heavy duty and compact headphones do not create stress on your ears, head and neck when using it for hours allowing you to maximize your Treasure hunting experience Technical specs: cable length: 5.5' feet; frequency response: 200hz-20khz; receiver frequency: 1052Db/nw (1000Hz); earphone impedance: 2*32 30% (1000Hz); rated power: 10Nw; no damage limit power: 100Nw; dimensions (L x w x H): 6.7" x 3.6" x 8.2"