The LaserMax Lightning with Grip Sense is the newest generation of laser activation technology simplifying the activation process. No need to change grip as the motion sensor detects hand placement and activates the laser. You can also choose to use the controlled push button. The Lightning has a fully programmable operating mode for steady or high-vis pulsed beam, up to 24 hours of battery life with a 10-minute time out feature to prevent battery drain, is water resistant.