Letike BY21S User manual

USERMANUAL
Test Model：BY21S

【Poweron/Poweroff】
Poweron:Longpressthescreentouchspotfor5secondsormore
thenthescreenwilllightup,SmartBandisturnedon.(Ifthescreen
doesn'trespond,pleasechargetheSmartBandaccordingtothe
stepsbelow.)
PowerOff:Pressthescreentouchspotandswitchto【OFF】interface,
thenlongpressthetouchspotfor5secondsormore,thenthe
SmartBandisturnedoff.
 
PowerOnPowerOff
【Charging】
First,clamptheusbchargingcabletotheSmartBand(makethemin
therightposition),andthenplugitintothestandardUSB
port(5v/500mAorabove)asthepictureshownbelow.Eg,Computer,
USBadapter,PowerbankEtc.Itwillbefullchargedafter120minutes.
PleaseUnplugtheSmartBandforsavingtheenergy.


【InstallingAPPinMobilePhone】
SearchanddownloadtheAppWearfit2.0inAPPStoreorGooglePlay;
OrscantheQRCodebelowanddownloadtheAPP(PS:Please
Download2.0version)

Supportedsystems:Android4.4,IOS8.0orabove(aswellas
bluetooth4.0orabove)
【Pairing】
Turnonyourphone’sbluetooth.
OpentheAPPWearfit2.0,clickpairtheSmartBandandclickthename
BY21SXX:XXtoconnect.
BluetoothiconappearsintheSmartBand,whichmeansitworks.
Afterpairingsuccessfully,APPwilljumptothesettinginterface
automatically,pleasefillintheinformationaccordingtoyourown
circumstances.


Tips:Ifyouhaveturnedonyourphone’sbluetooth,butcouldnot
searchtheSmartBand'sbluetooth,youaresupposedtorestartyour
phone'sbluetooth,thensearchagain.

【Mainfunctions】
DynamicHeartrate/Blood
oxygen/Bloodpressuremonitor
Timedisplay(handraisingfunction
supported)
Pedometer(Steps/Distance/Calories)Callreminder
Incoming
call/Message/Whatsapp/Facebook
reminder
SleepManagement(sleeptimeand
quality)
Sportsgoalsetting/exercises
informationsharing
Smartalarmclock(SetfromAPP)

SedentaryReminderFindtheBracelet
OTAupdatingDatasyncingtoAPP/APK
StopwatchRemoteCamera

【DynamicHeartrate/Bloodoxygen/Bloodpressuremonitor】
WhentheSmartBand'sinterfaceswitchestoheartrate/Blood
oxygen/Bloodpressuremode,theLEDlightonthebackwilllightup,
thenthemonitorwillstart.After1‐2minute(s),thedatawillbe
displayed.Singleclickthetouchspot,logoutofthecurrentmonitor.
Plus,youcanconnectyourphoneAPPtofinishthesingleormultiple
monitoritem(s)simultaneously,syncthemonitordata,andsetthe
functionofautomaticmeasurementato’clock.
Note:
Thesituationbelowwillshowthedifferencesbetweenthe
measurementdataandtherealbodystate.
1.SmartBanddoesn’tattachcloselytotheskin;Sweatordirtythingin
LED.2.Pleasedon’tmonitorafterdrinkingwine,coffceorblacktea,

smoking,andtakingabath;diningwithinanhouroryourbellyis
beingsqueezed.3.Whendoingthemonitor,pleasekeepyourselfas
calmasyoucan.


Correctgesture



*Thisproductmeasurementdataarejustforreferenceonly,notasa
medicaldiagnosticdata,andthetrendofbloodpressureisdifferent
frommedicaldiagnosis,theheartrateisnotthesameconcept,
pleasedonottakethisasthediagnosisortreatmentuse.

【SmartBraceletSelfcarryingfunction】
Pressthetouchspot,switchthefunctioninturn:
1. time:LongPressthetouchspotfor5secondsonthetimeinterface
toswitchthedial,andafterthechoice,longpressthetouchspotfor
5secondstoconfirm.
2. steps:showthenumberofstepsfortheday
3. mileage:showtheday'sjourney,inkilometre
4. calories:showthecaloriesconsumedontheday
5. heartratetest:stayattheheartratetestinterfacefor60‐90
seconds,theBraceletvibrateandgetthedata.
6. bloodpressuretest:stayatthebloodpressuretestinterfacefor
60‐90seconds,theBraceletvibrateandgetthedata.
7. bloodoxygentest:stayatthebloodoxygentestinterfacefor60‐90
seconds,theBraceletvibrateandgetthedata.
8. sleeptime:everynight,from21:00to09:00,thebraceletcan
automaticallydetectthewearers'sleepstateandsavedata.After
sleep,itcanconnectAPPsynchronization,andcanseethedetailed
sleepdataonAPP.
9. stopwatch:Onstopwatchinterface,andlongpressthetouchspot
for5secondstoenterthefunction,clickthetouchspottostartand

end,longpressthetouchspotfor5secondstoquitthefunction
10. information:Oninformationinterface,andlongpressthetouch
spotfor5secondstoenterthefunction,youcanreadthelast3
informationthatarereceivedbythebracelet,longpressthetouch
spotfor5secondstoquitthefunction
11. Findmobilephone:Onfindinterface,longpressthetouchspot
for5secondstoenterthefunction,clickthetouchspotandyour
mobilephonewillring,longpressthetouchspotfor5secondstoquit
thefunction
12. SwitchBackground:Onbackgroundinterface,longpressthe
touchspotfor5secondstoenterthefunction,clickthetouchspotto
choose,longpressthetouchspotfor5secondstoquitthefunction
afterchoice
13. deviceID:deviceID,whenconnectingtoAPP,findthedeviceIDto
connecttoAPP
14. Turnoff:Longpressthetouchspotfor5secondsontheOff
interfacetoshutdown



【CallandTextreminder】
Open"Wearfit2.0"APP‐>Mine‐>DeviceManagement‐>intelligent
remind,thenopenCallremind、SMSremind、Twitter、FacebookEtc,
allowAPPtoobtainthecorrespondingpermission,canrealizethecall,
Distance
Calories
HeartRate
BloodPressure
BloodOxygen
Sleep
StopWatch
Information
FindHandsets
Switchbackground
DeviceID
Ste
p
s
TurnOff
Time

informationremind
【Syncingdata】
AfterpairingtheSmartBandwithyourphone,youshouldrefreshthe
Homepagethenthedatawillbedisplayedandthetimewillbe
correctedautomatically.Thedateincludes:Steps,Calories,
Distance,Sleeptime,Heartrate,Bloodoxygen,Bloodpressureetc.
Whenitisdone,youcancheckwhetherthedataaresynchronizedor
notintheHomepage.Thefirsttimeofsyncingwilllastfor1‐2
minute(s).

【Mainparameters】
typebloodpressure
bracelet
BatterytypeLithium‐polymerbattery
weight11.8gConnectivityBluetooth4.0
Battery
capacity
80mAhWaterproof
level
IP67
Length245mmScreen0.96”TFT
Work
temperature
‐20℃~50℃Worktime5‐8days
BandmaterialTPUClaspmaterialAluminumalloy
APPLanguageChinese,English,Chinesetraditional,German,French,Italian,
Russian,Japanese,Portuguese,Spanish

【Attention】
1. Whenwearing,divingandshoweringarenotrecommendedfora
longtime.
2. Donotreplacethebatterywithoutinstructions.
3. Whencharging,youmustusetheequippedcable.
4. WhensyncingdatapleasemakesuretheSmartBandisconnected.
5. DonotputtheSmartBandtotheextremelyhigh‐temperatureor
low‐temperatureplaceforalongtime.




【Productlist】
HostTPUBandChargingCableUserManual
【FAQ】
1. Q:Braceletcan’tbepoweredonA：1.maybethebracelethasno
electricity,pleaselongpressthetouchspotaftercharging2.Maybe
touchinwrongposition,thetouchspotisinthefrontfaceofthe
othersideofthechargepin

2. Q:SmartBandcannotbecharged.
A:PleasecheckwhethertheSmartBandisconnectedcorrectlyand
thenplugitintothepoweradapter.(operatingaccordingtothe
charginginstruction)
WhentheSmartBandrunsoutofpower,Ingeneral,itwillgointo
thestateofcharging3‐5minuteslaterafterpluggingadpater.(screen
startstoinstructthestateofcharging)

3. Q:SmartBandcannotpairandconnect.
A:Duetotheproblemofsignalinterferencewhileconnectingtothe
wirelessbluetooth,thetimewillbedifferenteverytimeyoupairand
connectit.Ifitstillcannotworkaftertryingmanytimes,pleasetry
thefollowingmethods:
A.RestarttheBluetooth.
B.RestartthePhone.
C.CheckwhethertheSmartBandturnedonornot.

4. Q:Braceletautomaticallydisconnect,braceletcannotsynchronize
information
A:pleasesetAPPandmobilephoneaccordingtothefollowingsteps
4.1TurnonBluetooth:opentheBluetoothinmobilephonesettings
4.2OpenpowersavingJurisdiction:entermobilephone
settings‐>battery‐>intelligentpowersaving‐>Wearfit2.0，open
Unlimited
4.3Lockinbackgroundtomakeitfreetoclear:Openthebackground
tasklistthroughthemobilebackgroundtaskbuttonasbelowfigure1,

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facebookremind.
A:PleasesetthephoneandAPPaccordingtofollowingsteps:
5.1makesureWearfit2.0APPhasconnectedtobracelet,Ifyoucan't
connect,pleaserefertothesolutionofFAQ4.
5.2InAPP，Mine‐>DeviceManagement‐>Intelligentremind‐>APP
reminder‐>turnoffwhatsappandfacebookremindbuttonandthen
openitagain.
5.3InApp,Mine‐>DeviceManagement‐>Intelligentremind‐>NoNot
Disturb,turnitoff
5.4MobilephoneSettings‐>moresettings‐>accessibility(some
handsetsareBarrierfree)‐>wearfit2.0‐>turnonthewearfit2.0
button
5.5MobilephoneSettings‐>permission
management‐>wearfit2.0‐>setallwearfit2.0permissiontobe
allowed.
5.6MobilephoneSettings‐>Notifications&statusbar‐>Notification
management‐>Whatsappandfacebook‐>turnonallwhatsappand
facebooknotificationbutton
