Mini Builtin Battery GSM GPS tracker ST-903 for Car Kids Personal Voice Monitor Pet track device with free online tracking APP

(23 customer reviews)


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Before Order Notice

If you are in Turkey or Pakistan, please send SMS command to change local vaild IMEI number.
if you want change IMEI to:123456789078532
please send SMS command: IMEI#123456789078532#
please change IMEI number within 5 days when you received product.

If you are in Chile or Colombia,after you receive the product, you should register IMEI in your country as soon as possible, otherwise the device is not allowed to be used in your country.

Item Function

-Mini GPS Tracker
-Mini size easy to hide
-1050mAh built battery
– Voice Monitor
-Geo-fence alarm & Over speed alarm
-For Pet/kids/Personal/car
-2G GSM 850/900/1800/1900Mhz
-Built-in high sensitivity GPS&GSM antenna,
-GPS/GPRS/GSM/SMS Positioning and Tracking
-SMS tracking on cellphone with google maps link

* Note: Excluding the Pet Collar in the package

Warehouse in Russian and Poland

Ship from Russian/Poland warehouse will be FREE of customs tax.

Russian warehouse only ship to Russia local address via CAINIAO Warehouse.

Poland warehouse can ship to below countries via INPOST,DPD,UPS: Poland,Spain, France, United Kingdom, Italy, Netherlands, Sweden, Belgium, Germany, Czech Republic, Finland, Slovakia, Austria, Hungary, Croatia, Slovenia, Bulgaria, Denmark, Estonia, Lithuania, Latvia, Luxembourg, Monaco, Romania, Greece, Ireland, Portugal.

Device Working Mode

1. WORK-Keep working mode:
The tracker will keep working and send data by time interval.(ST-903 can works 20-24 hours)

2. MOVE-Work when the tracker is moving:
Tracker only works when it is moving, when it is stopped, it will sleep, GPS shut off, GSM works in low consumption mode. Vibration, SMS command, calling tracker can wake up the tracker to work 5 minutes.(ST-903 can works 3 to 5 days)

3.STANDBY-SMS or Call to tracker, it will work 5 minutes:
Standby mode, GPS shut off, GSM works in low consumption. SMS, calling can wake up the tracker to work 5 minutes.(ST-903 can standby 5-7 days)

Mizi Size GPS Tracker ST-903

Big Builtin Battery 1050mAh

History Route Playback

The tracker can help you to record the history route of your car

Voice Monitor

You will can remotely monitor the voice around the device, everything is under your eyes.

How to Login Platform

How to Activate Online Tracking

Send SMS configure the tracker(set IP and APN) to connect platform,
the IP:,
more info please check the user manual.
please send 3 SMS to tracker below:
SMS2:8040000 8090
SMS3:8030000 APN APNuser APNpassword(if APN need user and pass)
the APN is Acess Point Network of SIM card,if you don’n know APN,
please check it with your SIM card operator.or check the apn from here for reference.

Item Specification

Item Picture

Please identify products with SinoTrack LOGO, this is the Original SinoTrack Product.

Website Tracking Software

Mobile APP

APP name: SinoTrack PRO
You can download form APP Store(IOS) or Google Play(Android)

Shipping and Reply

– We reply your questions(using,install,configure tracker) within 24h.
– We will ship item via registered Aimail in 2 days after the payment cleared.
– The shipping time sometimes maybe a little longer due to custom problems, holidays or some uncertain reasons.
– We choose shipping way according to your country,we use the AliExpress Standard Shipping(AliExpress Official Logistics).
– For most countries:around 20-30 business days(such as Europe UK,Germany,Spain.Swden..etc)(Remote areas Longer).
– You can choose fast express deliver also,delivery time 7-10days.

Payment Notice

We accept Credit Card, PayPal, Bank Transfer, Western Union, And other payment method Aliexpress support.


Any Question please just feel free to contact us at any time!

About US

Additional information

Brand Name






Item Size


Special Feature

Internet Connected

GPS type

GPS Tracker

Model Name


Out Power


Gps Module


Screen Size

No Screen



Battery Life

20 To 29 Hours


GSM 850/900/1800/1900Mhz



Standby time


Tracking Software

Mobile APP

SinoTrack PRO

gps locator

pet gps tracker

Personal GPS tracker

real time tracking device

Kids Gps tracker

track gps location

23 reviews for Mini Builtin Battery GSM GPS tracker ST-903 for Car Kids Personal Voice Monitor Pet track device with free online tracking APP

  1. AliExpress Shopper

    Excellent! Works perfectly and it’s very accurate 10 ÷ 15 meters.
    Easy to set up!

    Color: ST-903-Bag Ships From: China

  2. M***v

    Отлично работает, позиционирование точное, реагирует быстро, прослушка есть. Продавец быстро обеспечивает поддержку если что-то не понятно.

    Color: ST-903 Ships From: Russian Federation

  3. A***n

    Все пришло в целости и сохранности…
    На вид, качественно…, посмотрим как поведёт себя в деле..

    Color: ST-903 Ships From: China

  4. D***a

    Very precise, if use many times a day battery not take anything.

    Color: ST-903-Bag Ships From: China

  5. M***a

    An excellent tracker, tracked the asleep horse once or twice) the duration of the work did not check, I charge after each walk just in case. The only negative-the application is terribly Russified.

    Color: ST-903-Bag Ships From: Russian Federation

  6. Z***i

    Excellent delievery time. best Product. Received in Pakistan. seller recomended ❤

    Color: ST-903-Bag Ships From: China

  7. Y***a

    As soon as I test-I’ll add a review. Delivery is super fast!!! Literally a few days and on the way brought Courier KSE. Thank u!

    Color: ST-903 Ships From: Russian Federation

  8. T***a

    The tracker came within 3 weeks on the DV. everything works, there is a user manual in English, there is written how to set up. On the Internet, this instruction is Russian, who is difficult to understand. I put SIM Yota, everything works. First shows the location somewhere in the Chinese port. Need to go outside, wait min 5 and then will show more less true. I have a tracker showing a neighboring house, and this is about 100 meters from my real location. Works in sleep mode for 12 days, then sends a bunch of SMS with a charge of 6%, and you need to charge again. Have on Sim connected SMS package, large stock. And most importantly! It has a microphone! On the territory of the Russian Federation, such trackers are prohibited for private use, so if you use it, then do not tell anyone. I’m putting my baby in my jacket, in case he runs off the garden to at least know where to look. Works both through SMS commands and through the application. In general, read the instruction, there everything is clear

    Color: ST-903 Ships From: Russian Federation

  9. S***v

    Спасибо продавцу за быструю доставку и подарок, в виде чехла. Заказывал без чехла, очень приятно. Трекер работает отлично, сразу нашел свое место. Удачных продаж Вам! А покупателям, качественный товар!

    Color: ST-903 Ships From: Russian Federation

  10. I***a

    Excellent product! Good quality and met everything described in the description. Easy to set.
    The manual is in English, quite understandable. I have installed it in a hidden part of my bike and the error margin of the position is quite accurate.

    Color: ST-903-Bag Ships From: China

  11. AliExpress Shopper

    Came in 2 weeks, delivery by courier, in the application shows that I’m in China, ordered a SIM card for him, I will deal with the voice recorder, it seems to be to be

    Color: ST-903 Ships From: Russian Federation

  12. s***v

    The goods came quickly. All as in the description. I haven’t checked yet. I recommend the producer. It’s not about Rusky.

    Color: ST-903 Ships From: Russian Federation

  13. j***s

    Arrived very fast only 20 days will test the product and see the quality.

    Color: ST-903 Ships From: China

  14. K***n

    Well qualified and robust product, thanks for fast shipping

    Color: ST-903-Bag Ships From: China

  15. m***m

    Arrive fast and all well packed thanks 100% recommended

    Color: ST-903-Bag Ships From: China

  16. Y***v

    Shit full, quickly discharged AKB. The route does not draw through the streets, the accuracy is primitive. Dont advise

    Color: ST-903 Ships From: Russian Federation

  17. M***n

    Very fast delivery to Saratov 4 days recommend the seller on⭐⭐⭐⭐⭐

    Color: ST-903 Ships From: Russian Federation

  18. D***v

    Works. It is configured via SMS and via the offer. Delivery to St. Petersburg less than a week.

    Color: ST-903 Ships From: Russian Federation

  19. AliExpress Shopper

    4 days to Rostov region.
    Purchase satisfied. With the application has not yet figured out. Works and without an application. Call the device, sends SMS with coordinates on Google Map. Pretty accurate.
    In the reviews I saw many questions such as whether there is a battery and a microphone. The battery is there, the device can work offline. The microphone is also there, I understand used through the application. The other day I’ll deal with the teams, then I’ll add a tip. The antenna is also not bad.
    In general, the conclusion: it is more expensive about twice than in other stores, but super fast delivery, plus I’ll take a photo of the stuffing. It suits me.

    Color: ST-903 Ships From: Russian Federation

  20. J***s

    works as expected, good precision and battery life (if not in use) waking up the device when moving is the best thing that could ever have been invented. Larger than my GF21 and much better. super fast shipping

    Color: ST-903 Ships From: China

  21. I***n

    Well made product, excellent application and material

    Ships From: China

  22. E***l

    produto aparentemente ok, sem avarias e funcionando. não testei as funções ainda pois vou providenciar um chip exclusivo pra ele. kit muito organizado e tudo de mt bom gosto e preparo. recomendo. (caso tenha algum problema, volto relatando!)

    Color: ST-903 Ships From: China

  23. P***v

    Fast shipment and delivery to door! Just 7 days before Novokuznetsk. Equipment and quality corresponds to the description. The weight is even less than stated in the instruction. For me, this is an important parameter, K. I took it for the drone. I saw them fly away in an unknown direction!

    Color: ST-903 Ships From: Russian Federation

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