Package included:<br />1 x Pen Shape 5mW 532nm Laser Pointer<br />2 x AAA Batteries<br /><br />Specification:<br />Prduct name: 	Pen Shape 5mW 532nm Laser Pointer<br />Function 	For Astronomers<br />Light color: 	green light<br />Wave Length Range: 	532nm<br />Material 	Copper<br />Power Supply 	2 X AAA batteries (included)<br />Operation Voltage(V) 	3.0V<br />Working Temperature (degree): 	0▲C - 40▲C<br />Weight: 	155g<br />Size: 	15.5 x 1.7 x 1.5cm(length x head x body diameter)<br /> <br />Features:<br />Suitable for aiming， positioning<br />Convenient and practical to use<br />Superb for professionals and amateurs