REIN utilizes an optional proprietary remote switch giving you unparalleled performance. Giving you constant and momentary functionality, it is the strongest and most reliable remote switch available. And it is fully submersible to 100ft of water for 24 hours. The remote switch offers built-in operational redundancy; it is wired electrically independent of the push-button tail-cap. If your remote switch were to fail, your REIN still works via the tail-cap push-button. COMPATIBILITY The REIN remote switch is compatible with both the REIN full-size and REIN Micro. This remote switch upgrades your Full size standard kit or your Micro standard kit. FEATURES Patented REIN Mfg: Cloud Defensive Llc