6000 Series machined aircraft aluminum with anodized finish. C4® LED technology, impervious to shock with a 50,000 hour lifetime.Multi-function, push-button tactical tailswitch facilitates one-handed operationof momentary, variable intensity or strobe mode.TEN-TAP™ programmable switch allows user selection of one of three different programs: high/strobe/low (factory default), high only, or low/high.