LaserLyte Laser Sight Center Mass SM Rail Mossberg Shockwave Laser Laser dots are like a shotgun pattern Ring of dots grow at 1-inch per yard Center dot is for precision Dual Mode Laser: Constant and Pulse Power Output: 630 - 670nm, &lt; 5mW, Class: IIIa NOTE: Refer the Instructional Video from the Image section and the User manual from the Technical Specification before use which is highly essential.