Model Number: BH-BW470 Brand Name: Binghang Key Specifications/Special Features: Usage: Toactivate:Clickthemetaldiskinsidethegelwarmer,itcanlastwarmfor60minutes.Torecharge:Putthehardenedbottlewarmerintoboilingwater.Continueboilingforapproximately5minutesoruntilthecrystalsarecompletelyliquid.Feature1.InstantandReusable:Forhotcompress,whenbendingthemetaldisc,itheatsuptoapproximate55degreeCelsius.Itisthemosteffectivewayforheatingmilkandallbeverages.2.Useful:Itcankeepthenursingbottleorotherbeveragewarm,itissurelyagoodassistantindailylife,especiallyforafamilywithababy.3.Safe:Itisnon-toxic,non-caustic.4.Portable:Itwouldbeconvenientformotherstocarrybabiesoutdoorbecauseofitssmallsize.5.Differentshapes,sizes,andcolorsareavailable.ApplicationKeepmilkbottlewarmwhenyouareoutdoorincoldwinterdays.
Outermaterial: PVC
Innermaterial: SodiumAcetate, water, metalplate

Whatisinthemagicbottlewarmer?
Themagicbottlewarmercontainswaterandfoodgradesodiumacetate(aformofsalt)andastainlesssteeldisc.

Howistheheatproduced?
Flexingthemetaldiscintheliquidcreatesachainreactioncausingthemagicbottlewarmertocrystallize.ThiscrystallizationALWAYSoccursatatemperatureof130degreesF/54C.

Howlongdoestheheatlast?
Smallermagicbottlewarmerwillbeveryhotforthefirst30minutesandthenwillgraduallycooldown,whilelargermagichandwarmerswillbehotforthefirsthourandthenstarttocooldown.