http://mysku.ru/blog/china-stores/41277.html

Specification:

Product name:	445nm Blue light Laser Pointer Pen
Body material:	Aluminum
Surface treatment:	Anodicoxidation Treatment
Battery:	2 x 16340 Battery (included)
Operating voltage:	DC 7.4V
Switch Type:	Clicky
Switch Location:	Tail-cap
Wave length:	445nm
Beam dimension:	please contact cuctomers service online.
Laser color:	Blue
Body color:	Silver
Focus mode:	Adjustable
Preheat time:	< 3 seconds
Best Operating temperature:	+15℃~ +35℃
Facular diameter:	6M place <φ10mm
Power:	please contact cuctomers service online.
Size:	138mmx27mmx27mm

Features:
1. Actual photo shown,Simple and easy to use.
2. Use your laser pointer to point at any desired targets on projection screen, video.
3. Power saving, lightweight, suitable for putting in your pocket or handbags.
4. This laser pointer can be used for presentation, teaching indicator, children amusement and more.
5. This high quality laser pointer adopts the latest technology optics and microelectronics.
6. Press-button switch at the bottom, no need to keep holding when use it.
7. Portable size and science shape design.

Warnings:
1. Avoid direct eye exposure to laser beam -- exposure to the eye can cause permanent damage.
2. The length of working time must not exceed 3 minutes.If reaching 3 minutes it must be paused for 2 minutes.
( Professional suggest. Please must observe this rule to protect your laser)
3. Please keep this out of the reach of children.
4. When not in use, it is always a good idea to remove the battery -- it is is a good way to ensure children do not have access to it.
5. Do not whack or drop it.
6. Do not let dust fall in the light hole.
7. Non-demolition.
8. In some countries, laser pointers such as this may be illegal to own and/or use (especially the higher powered ones). Therefore, by purchasing these products YOU (the customer) accept all responsibility and liability to determine and fulfill the requirements and limitations of use or resale of these products in accordance with your country's laws and regulations. In the event of resale, you also agree to include this notation in the product description, so that any potential buyer can also make an informed purchasing decision.

Note: Positive pole -- outward, negative pole -- inward (Please make sure you install the battery in the right way, otherwise it will cause the short circuit of the laser, if you are not sure, you can refer to the picture, thank you!)

Package included:
1 X Laser Pointer Pen
1 X Protect Glasses ( Wear it before use the laser pointer.)
1 X Charger
1 X Laser sword
2 X 16340 Battery
5 X Star Pattern Converter

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