New 650nm 520nm Portable Line Cross Laser
(The link does not include batteries and charger.)
Specification 
Wavelength:  650nm / 520nm
Working Voltage: 3.7VDC 
Battery:16340 (Diameter:16mm Length:34mm) not included
Working Current: 1300mA
Working Temperature:  10 ~35℃
Laser Shape: Line or Cross
Material and Color:  Aviation aluminum black
Dimensions: Diameter 22mm* Length 120mm

Note:
The sticker of the laser may be removed before shipping.
Battery not included
Battery direction for installation: + pole of the battery connects to the tail of the pen, – pole of the battery connects the spring of the inside  module.