The Amaz­fit brand was found­ed in 2015 by the Chi­nese com­pa­ny Hua­mi Tech­nol­o­gy. The Mi Band series of pop­u­lar fit­ness bracelets is her brain­child. But the man­u­fac­tur­er also has var­i­ous smart­watch­es, the line of which was recent­ly expand­ed with a new prod­uct — Amaz­fit Stratos 3. This is a gad­get with an unusu­al screen and many func­tions for sports fans. Let’s see if the com­pa­ny was able to cre­ate anoth­er best­seller.

Brutal appearance

The body of the device is made of poly­car­bon­ate with car­bon fiber imi­ta­tion. Water resis­tance of 5 ATM is declared. The bezel, which plays a dec­o­ra­tive role, is made of ceram­ic, which guar­an­tees its resis­tance to scratch­es. There are four steel but­tons on the side: action con­fir­ma­tion, up, down, return. There are enough of them to com­plete­ly replace the touch dis­play. For exam­ple, while run­ning or in the pool.

The watch is more aimed at a male audi­ence; the diam­e­ter is too large for a woman’s hand. The includ­ed sil­i­cone strap is pleas­ant to the touch and has a large num­ber of holes, thanks to which the watch can be eas­i­ly fas­tened on any wrist. The fas­ten­ers have a stan­dard size (22 mil­lime­ters), so find­ing a replace­ment for the orig­i­nal strap will be easy. On the bot­tom there is a prac­ti­cal­ly non-pro­trud­ing heart rate sen­sor and four con­tacts for charg­ing.

Amazfit Stratos 3

The display is not afraid of the sun

The smart watch is equipped with a 1.3‑inch trans­flec­tive TFT screen. Among the main advan­tages of the tech­nol­o­gy are ener­gy effi­cien­cy and the abil­i­ty to reflect ambi­ent light. The prin­ci­ple of oper­a­tion is sim­ple: the brighter the light­ing around, the bet­ter the infor­ma­tion on the dis­play is vis­i­ble. Indeed, on a sun­ny day, the num­bers on the screen are per­fect­ly read­able with­out addi­tion­al back­light­ing. You will have to acti­vate it only in the evening, choos­ing from 5 bright­ness lev­els. Since there is no light sen­sor, you will have to man­u­al­ly adjust the back­light strength. But this will need to be done once or twice.

The matrix received a res­o­lu­tion of 320x320 pix­els, which gives a suf­fi­cient pix­el den­si­ty of 238 ppi. To pro­tect the dis­play, tem­pered Goril­la Glass 3 with high-qual­i­ty oleo­pho­bic coat­ing is used. By the way, the touch grid is notice­able in the light, and the col­ors on the screen look dull and fad­ed. The view­ing angles are also dis­ap­point­ing.

Amazfit Stratos 3

Synchronization with smartphone

The link to the phone is the Zepp mobile appli­ca­tion, avail­able on iOS and Android. When you turn it on for the first time, a QR code appears on the watch, which must be scanned with your smartphone’s cam­era. The pro­gram dis­plays sta­tis­tics on dai­ly activ­i­ty. In the Amaz­fit Stratos 3 tab, noti­fi­ca­tion sources, dai­ly goals and wid­gets are con­fig­ured. There are 8 stan­dard watch faces avail­able, but if you wish, you can eas­i­ly cre­ate your own by upload­ing a back­ground and set­ting the type of hands and divi­sions you like.

Focus on sports

The main func­tion­al­i­ty of the new prod­uct is focused on health — 80 sports modes will cov­er the needs of almost any per­son. For each work­out, there is a set of spe­cial para­me­ters and con­trol adjust­ments. So, when swim­ming, the touch dis­play is turned off, and when run­ning, you can choose the goal of the activ­i­ty: endurance, fat burn­ing, healthy car­dio and much more. The Bio­Track­er PPG opti­cal sen­sor mea­sures heart rate around the clock and warns of high pulse val­ues. The First­beat algo­rithm eval­u­ates a user’s abil­i­ty to tol­er­ate a cer­tain phys­i­cal activ­i­ty and helps to avoid injuries due to exces­sive train­ing.

The util­i­ty dis­plays sta­tis­tics of steps tak­en, heart rate, peri­ods of deep and shal­low sleep. The lat­ter is espe­cial­ly impor­tant, because vital­i­ty direct­ly depends on the qual­i­ty of sleep. Detailed activ­i­ty records are also avail­able for view­ing. By the way, the clar­i­ty of mea­sure­ments is ensured by the sup­port of most satel­lite sys­tems, as well as a well-tuned gyro­scope and accelerom­e­ter.

Controls and functions

The Stratos 3 inter­face is user-friend­ly. Swip­ing to the left brings up the noti­fi­ca­tion his­to­ry, to the right — the menu of all appli­ca­tions, up — the quick set­tings pan­el, down — var­i­ous wid­gets, the list and order of which can be eas­i­ly adjust­ed in the mobile appli­ca­tion.

The watch runs on the pro­pri­etary Amaz­fit OS oper­at­ing sys­tem based on Android. Thanks to this, there is a com­plete file sys­tem. The gad­get can be used as a flash dri­ve, down­load­ing files via Wi-Fi or USB cable. There is 2 GB of free space, which will more than fit a cou­ple of music albums. The acces­so­ry can become a host for oth­er Blue­tooth devices, such as wire­less head­phones. So you don’t have to take your smart­phone for a run, because it’s con­ve­nient to switch your favorite tracks right from the watch. By the way, the com­pa­ny has some very sophis­ti­cat­ed Power­Buds sports head­phones in its arse­nal, with which your work­out will be much more fun.

Amazfit Stratos 3

Now let’s talk about the not so pleas­ant nuances. Stratos 3 does not dis­play icons of the appli­ca­tions from which the mes­sage came, so it is dif­fi­cult to imme­di­ate­ly under­stand the source. You can­not reply to a noti­fi­ca­tion from your device. When you receive a call on your phone, the watch con­tin­ues to vibrate until you select an action on its screen. When con­trol­ling music played from a smart­phone, press­ing the play­er but­tons on the watch does noth­ing — the vol­ume does not change, the songs do not switch. But man­u­fac­tur­ers usu­al­ly quick­ly fix such firmware bugs, we are wait­ing for updates.

What about autonomy?

The new prod­uct was equipped with a 300 mAh bat­tery. The bat­tery, accord­ing to our mea­sure­ments, lasts for 6 days of auton­o­my. They include con­stant heart rate mon­i­tor­ing and sleep analy­sis, con­tin­u­ous syn­chro­niza­tion with a mobile phone and receiv­ing noti­fi­ca­tions. Let us note one more point: when 5% of the charge remains, the watch does not allow you to acti­vate the screen back­light and turns off all func­tions, leav­ing only the dial. The oper­at­ing time of the device with GPS enabled depends on the select­ed pre­set and its para­me­ters. The loca­tion is deter­mined every sec­ond — up to 35 hours with­out a pow­er out­let, GPS is record­ed every five sec­onds — up to 45 hours, the watch com­mu­ni­cates with satel­lites once a minute — up to 70 hours of auton­o­my.

Amazfit Stratos 3

For par­tic­u­lar­ly eco­nom­i­cal use, the Ultra mode is pro­vid­ed. When acti­vat­ed, the screen res­o­lu­tion changes, the graph­ics are sim­pli­fied, and the col­or palette is lim­it­ed. The sys­tem begins to work slow­ly, many fea­tures are dis­abled. But this way, accord­ing to the ven­dor, you can for­get about the out­let for as much as two weeks. A full cycle of ener­gy replen­ish­ment takes 1 hour 40 min­utes and is car­ried out through a mag­net­ic cra­dle with four con­tacts. If it gets lost or the wire frays, it will be dif­fi­cult to find the orig­i­nal charg­er.


48.6 x 48.6 x 13.4 mm
60 grams (includ­ing strap)
body — plas­tic
but­tons — steel
bezel — ceram­ic
strap — sil­i­cone
1.34″, trans­flec­tive TFT, 320×320, 238 ppi, Corn­ing Glass 3
512 MB
4 GB
300 mAh
Blue­tooth 5.0 LE, Wi-Fi, GPS, GLONASS, GALILEO, Bei­dou
heart rate mon­i­tor, gyro­scope, accelerom­e­ter, barom­e­ter
19 sports modes, water resis­tance up to 50 meters (5 ATM), Bio­Track­er PPG bio­log­i­cal opti­cal sen­sor, First­beat algo­rithms
Amazfit Stratos 3

Bottom line

As the man­u­fac­tur­er posi­tions it, the watch will be an excel­lent choice for ath­letes, fit­ness enthu­si­asts and trav­el­ers. You will be pleased with its thought­ful ergonom­ics, abun­dance of sports fea­tures and high auton­o­my in the “Ultra” mode. If you are look­ing for a device just for every­day wear, then it is bet­ter to look at oth­er options.

Find out more about Amaz­fit Stratos 3