Samsung Gear S

Samsung Gear S is a smartwatch designed and marketed by Samsung Electronics. It was announced on August 28, 2014, as the successor to the Samsung [Gear 2] and was released on November 7, 2014. The smartwatch can be modified to run Android 5.1.1 or Wear OS 6.0.1.
Its successor, the Samsung Gear S2, was released on October 2, 2015.

Specifications

The Gear S is similar to older versions of the Samsung Galaxy Gear although it does come with some new additions. The Samsung Gear S has a curved 2.0 inch Super AMOLED screen at 360×480 pixels. It has a Quad Core 1.0 GHz processor and runs the Tizen operating system. As with the Galaxy Gear 2, the Gear S includes 512 MB RAM and 4 GB internal storage as well as a 300 mAh Li-ion battery.
Using a 3G module the watch itself is able to connect to the Internet, make phone calls and send SMSs without needing a phone. It was the first wearable device to include Wi-Fi, Bluetooth and 3G connectivity.