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Property and Equipment
12 Months Ended
Dec. 31, 2015
Property, Plant and Equipment [Abstract]  
Property and Equipment
Property and Equipment
Property and equipment consist of the following: 
 
December 31,
2015
 
December 31,
2014
Computers
$
66,945

 
$
59,076

Research equipment
305,066

 
143,185

 
372,011

 
202,261

Accumulated depreciation
(191,089
)
 
(154,896
)
 
$
180,922

 
$
47,365


All of the research equipment is held by the Company's vendors. Depreciation expense was $36,193, $47,656 and $50,402 for the years ended December 31, 2015, 2014 and 2013, respectively.