Handheld Adjust Focus laser Red

100mw 650nm Handheld Adjust Focus Red Laser Pointer SD302(1 x 18650 included)

price: $66
Specifications:

    Red Laser Beam Dot
    Perfect for astronomy, presentation, tutorial and office meeting use
    Produce clearly visible red beam in the dark
    Power saving, durable and reliable
    Laser Color: Red
    Operation Voltage: 3.0~3.7V
    Power Supply: 1 x 18650 battery
    Laser Wave Length: 650nm
    Laser Output: 100mW
    Storage Temperature Range: -10~+50°C
    Size: 148 x 22cm /5.8 x 0.9in (H x Dia.)
http://www.lasersman.com/red-laser-pointer-100mw-650nm-adjust-focus-sd302/