The price of this link is the price of a laser pointer (OPP bubble bag) without battery and box (don't buy it back until you know it is without accessories, you can consult customer service or have a look at the instructions before you buy it, there is an error between the photo of the goods and the real thing)

Accessories should be purchased in addition: No. 7 battery is 1 yuan for one pair; One black carton 1.5, one white flannelette carton 2.5

Laser products will have power floating, so there will be a phenomenon of different brightness for bulk sales, (principle: for example, the output power of the product is 50MW, there is no lack of more than 50MW power, so the laser products do not guarantee the uniform brightness, this reason does not as a quality problem package freight replacement!

[Use battery] : 2*AAA7 dry battery
[Product appearance] : pen shape
[Appearance color] : black

[Laser type] : Visible laser Diode
[Specification parameters] : fixed focus, spot-shaped spot, continuous output, continuous service life & GT; 5000 hours
[Output wavelength] : green 532nm 
[Output power] : 5MW
(Can be customized for customers 1Mw, 5mW, 10mW, 20mW, 30mW, 50mW, 100mW, 200mW power, longer range, brighter light, thicker light trajectory, different prices)
[Range] : 500-10000 m
[Spot diameter] : Minimum spot diameter ≤ 1.0mm; Light spot at 15m & LT; Φ 18 mm
[Circuit control] : APC circuit
[Working voltage] : DC=3.0V
[Starting voltage] : DC=2.3V
[Working current] : I< 350 ma
[Working temperature] : +20℃ ~ +30℃
[Storage temperature] : +10℃ ~ +40℃
[Packaging] : Optional carton and flannelette box

Contrast differences between green, red, and blue-violet light:

Brightness: Green light & GT; Red light & gt; LanZiGuang
Price: Red & LT; LanZiGuang & lt; Green light
Light concentration and range: blue violet & LT; Green & lt; Red light
Stability: green light & LT; Red light = blue-violet light   (Green light is more affected by the climate, and it needs to be preheated for a few seconds or to cover the heat first.)

Laser indicator:
Aka star pen, laser pen, laser pen, hand-held laser. Because of its very strong intuitive visible light (especially green laser), used to indicate a function named more. Because of its bright light beam, miscellaneous light interference resistance is strong, and is more and more used in teaching/astronomical refers to the star, fixed point orientation, etc. Is the laser lovers/amateur astronomers, equipment of choice for outdoor activity lovers. Also as a high-end gifts friends and family.