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Property and Equipment
6 Months Ended
Jun. 30, 2017
Property, Plant and Equipment [Abstract]  
Property and Equipment
Property and Equipment
Property and equipment consist of the following:
 
June 30, 2017
 
December 31, 2016
Computers
$
70,960

 
$
70,960

Research equipment
305,066

 
305,066

 
376,026

 
376,026

Accumulated depreciation
(299,393
)
 
(266,203
)
 
$
76,633

 
$
109,823


Depreciation expense was $16,595 and $20,593 for the three months ended June 30, 2017 and 2016, respectively.  Additionally, depreciation expense was $33,190 and $40,963 for the six months ended June 30, 2017 and 2016, respectively.