DealExtreme is a Chinese retailer of Chinese-made cheap gadgets. While I personally believe DX tries to operate on the same level as Western retailers when they can - in terms of truth-in-advertising etc - their Chinese suppliers are *not* particuarly honest or safety conscious.

You need to understand that the specs on DX's web pages are manufacturer claims. There's no telling how much 532nm green that "30mW" laser produces, and much more important, there's no telling how much 1064nm infrared it emits, and it's the 1064nm that's dangerous. A badly made 30mW greenie can easily put out enough 1064nm to blind you and since you can't see it you won't know until afterwards.

A red laser won't put out any infrared. Blue will. Ultraviolet lasers (parts salvaged from consumer BluRay players) won't but they have their own hazards.

Bottom line: for red it's not dangerous to give DX a try, but for green stick to someone reputable like
Atlas Nova . That link goes to a model with several beam patterns other than a point, also important for a rescue laser, and it won't leave your rescuer blind (SAR people appreciate that).