Product No. 3961.1Pull-pin Vest StrobeSmall, compact, rugged, waterproof; pack inside inflatable life jacket or attach to standard life vest Pull-pin activation: Automatically lights when vest inflates or if manually pulled Adjustable flash shield for optimum eye protection Pull-pin lanyard clips to bottom of inflation chamber Light test feature with Test Key to ensure readiness-can be tested many times Easy to mount-fits on inflation tube via O Ring which will not damage inflation tube, or fits on any strap of conventional life jacket Tamper Tab breaks to indicate light has been activated Long term storage lithium battery-10 year storage life (recommended replacement 5 years from date of purchase-write month/year of replacement date on case at time of purchase) Operating life-approximately 8 hours continuous at -20C (-4&$176;F)Size:3.1L x 1.8W x 1.6D (7.9L x 4.6W x 4.1D cm)Weight:2.8 oz (65 g)Material:UV stabilized composite polymerColor:Hi-Viz YellowOperation:Pull-pin activation; automatic on some vests, manual activation when pulled by handBeam Angle:13 vertical; 2 horizontalVisibility:15cd vertical; 2.5 cd horizontal; 2m (3.2 km)Lamp:Strobe lightBattery Type:Lithium; 10-year storage life (5-year replacement life)Limited Warranty:1 yearOperational Life:Approximately 8 hours continuous at -20C (-4F)