The Crimson Trace Laserguard Pro is a powerful laser sight and LED white light in a single compact unit. Its illumination and targeting product is activated with Crimson Trace's famed Instinctive Activation, which activates the unit with a normal firing grip. The Laserguard Pro offers four modes of operation: laser + light, laser only, light only, and laser + light strobe. The unit features a master on/off switch, is completely user-installed in moments, is adjustable for windage and elevation and offers two (2) hours of battery life. This red laser model is compatible with Glock 42/43 and has an 150 luemn light output.