The ACR HemiLight™ 3 water activated rescue light integrates with Mustang Survival immersion suits to increase in-water visibility. The ACR Hemilight™ 3 also attaches to almost any style life jacket. It is smaller than other approved lights and features rounded edges to maintain inflation bladder integrity in inflatable life jacket PFD's. The LED light activates when in contact with salt or fresh water and can be deactivated by sliding the switch to the off position. Installation is quick and simple with the unique Dragon™ Clip which provides secure retrofit attachment to almost any style PFD in a matter of seconds.