The Viridian Universal C5L Laser comes in two options. One with green laser and tactical flashlight, and one with just the laser and no flashlight. I chose the laser only option. The unit comes well packaged in a box in which the laser and accessories are embedded in Styrofoam to prevent shipping damage. The laser is designed to attach to standard pistol pic rails, and comes with instructions, laser adjustment wrench, and battery charging unit with necessary cables. Once charged, I have found the laser to be usable for a period of weeks prior to need to recharge. Naturally, this depends upon how often you activate the laser and how long you leave it on. If you are using this for CCW, the only necessity required is having a holster that is designed for your specific model of pistol, to include this specific laser. Viridian sells holsters that are designed for use with their lasers, however, depending on what model of pistol you own, you might find it very hard to find the correct holster. As an example, I could not find a holster for my Glock 23 that will accommodate this laser.