Ultra Thin at About 1/4"</br>High Quality Construction</br>Superb Sound Quality</br>High Volume</br>1 Year Warranty</br></br>Product Description</br></br>The X2's are great sounding thin-bodied helmet speakers!  The newest X2 model combines comfort with quality.  At only about 1/4 inch thick, they are thinner than our HS92 model, but nearly twice as loud.  These speakers have a 1 year warranty. 

Specifications: 
Speaker Enclosure: 
Dimensions: 2.25" diameter X .31" thick
Actual Speaker Size: 
Dimensions: 1.4" diameter X .25" thick
Impedance: 32 ohm
Max Power: 500 mw

3.5mm connector plug 
Connector Cable:
Stereo music cable: 3.5mm(1/8") plug to 3.5mm(1/8") jack with inline volume control</br><br/>http://www.amazon.com/gp/product/B004HMHW9E