The A20S ia a ready-to-wear GPS watch / tracker, with many useful health and welfare functions. It has the capability to announce the time, to send SOS messages, to send geofence / safety zone messages, to remind the person wearing it to take pills or even to take some exercise.

  It can also measure heart pulse rate and count exercise steps.

It has phone functionality that is only available with a With Voice subscription (SIM type). Unless specified, the default watch subscription is without voice / phone functions.
When purchasing a GPS watch, it is necessary to choose an annual renewable subscriptions, with or without voice capabilities:

GPS Watch subscription - link:  Watch Subscription

GPS Watch with Voice subscription - link: Watch Subscription with Voice  which includes 5 mins talk time per month for emergency calls. It is not a mobile phone.

The A20S Watch uses the Aibeile app and Web App.

The App (for small screen devices) is called: Aibeile -  downloadable from the Apple or Play Stores

The Web App (for large screen devices) is called the GPS Tracking Station at: https://www.aibeile26.com - click link:>  aibeile26.com.
Download and read the two guidance documents linked below. Launch the Web-App, then:

• Select a language, e.g. the UK flag for the English language.
• Click on either the Account tab (for multiple watches) or the ID No. tab for single watches. Enter your Account name, or ID number from the label on the Watch outer box;
• Enter the Password specified on your GPS2Find invoice. The default Password is: 123456.
• Select the "Monitor" tab.

Below are links to Training / User PDF documents to download. These explain their operation.

Aibeile phone App Guide - DOWNLOAD LINK

GPS Tracking Station Web App Guide:  DOWNLOAD LINK

A20s GPS Watch Guide: DOWNLOAD LINK

The A20S watch comes with a magnetic coupling charging cable and charger and a SIM already installed. Voice & telephony functions are with the Watch Subscription with Voice only. Excess call charges will be billed back to the customer.

Features:
1- With great waterproof ip67
2- 1.44 inch big touch screen
3- Magnetic charging
4- High accurate ceramic antenna
5- Real time tracking
6- Two way communication
7- Geo-fence and SOS emergency call
8- Heart rate monitoring and blood pressure
9- Fall down alert
10- Phonebook supported

Waterproof grade: IP67
Size: 49X40X14.5mm, strap:110mm
Weight:52g
Battery: 500mAh
Standby time: 4-5days
Positioning: GPS+BD+LBS+WIF