Crimson Trace LTG771: The Lightguard is a 100 Lumen LED white light designed to securely fit around the triggerguard. Featuring ambidextrous Instant Activation with Constant and Momentary modes, the LTG-771 offers over one (1) hour of illumination with two (2) 1/3N batteries (included). With ruggedized polymer construction and a rapid change battery cap, this tactical light offers effective illumination. A best-in-class weapon mounted light from the brand you trust for personal protection optics. This model is compatible with Springfield XD-S 9/40.