Gripsense represents laser activation technology by simplifying the activation process.The user simply grips the firearm, setting off a motion sensor once in the detection zone, which then activates the laser immediately and does not require the user to change their firing grip.Additionally, the lightning with gripsense activation technology includes some significant innovations including a fully programmable operating mode, and up to twenty hours of continuous battery life- safeguarded from inadvertent drain by a ten-minute time out feature.Power Switch: GripSense/Push ButtonWavelength: 520nMLaser Color: GreenFirearm Fit: UniversalFinish: BlackMount Type: Picatinny/Weaver