Property and Equipment

6 Months Ended

Jun. 30, 2016

4.	PROPERTY AND EQUIPMENT

Property and equipment is recorded at cost when acquired. Depreciation is provided principally on the straight-line method over the estimated useful lives of the related assets, which is 3-7 years for equipment, furniture and fixtures, hardware and software and leasehold improvements. During the six months ended June 30, 2016, the Company invested $5,142 in shop machinery and equipment, $3,719 in computers and electronics and $1,922 in office furniture and fixtures. Depreciation expense was $16,572 and $5,160 for the six months ended June 30, 2016 and 2015, respectively. Property and equipment consists of the following at June 30, 2016 and December 31, 2015:

	June 30, 2016			December 31, 2015
Shop machinery and equipment	$	86,031		$	80,889
Computers and electronics		32,630			28,911
Office furniture and fixtures		35,899			33,977
Leasehold improvements		19,514			19,514
		174,074			163,291
Less - accumulated depreciation		(43,567	)		(26,995	)
	$	130,507		$	136,296