Thisheartratemonitorsoftstrap is anindispensablepart of the heart ratemonitor.Itwilldetectandsendyourrealtimeheartratetothereceivingterminalaccurately.Specifications:1.SpaceBetweenTwoSnapButtons:45mm.2.Belt Length:100130cm/39.3in~51.1ininch.3.Material:Nylon+Spandex.4.Color:Black.Features:Softelasticstrapprovidesacomfortablefit.Easytouse,clean,durable,highlyefficientandstable.Softfabricsandadaptiveelectrodesmakeitextremelysensitivetoyourheart'selectricalsignals.Compatiblewithallheartratesensors.SuitableforPolar,Wahoo,Garmin.Instruction：1. Wetthesensorsontheinsideofthestrap.2. Attachthemonitor(notinclude)tothestrap.3. Attachthestraparoundyourchest.4. Makesurethemonitorsitsabovethebaseofyourchestbone.PackageIncluded:1xChestBeltStrap(onlystrapnotincludingtransmitter)