Red Laser diode, this is a very small copper head with standard beam.  It is suitable for 3V 5mW standard, with 6mm outside diameter, can be used to connect diode tubes for multiple uses.

Technical Specification:

• Output Power: 5mW
• Wavelength: 650nm
• Working Voltage: 3v - 5V
• Laser Shape & Colour: Red Dot
  
• Housing material: Copper
• Outer diameter: 6mmOperating Current: <40mA
• Size: 6mm*18mm (diameter*length)

 Features:

• Small size
• Cost-effective 
• Gives continuous output
• Nanometer Wavelength

 Applications:

• Embedded Electronics project
• Laser harps
• Electronic 'trip wires'
• Laser-vision guidance