Major mobile manufacturers - Microsoft, Apple, Samsung, Xiaomi, and more - have been trying their hands at wearables. As the competition tightens, the Apple Watch 2 and the Samsung Gear S3 emerge as the most popular options.

The first Apple Watch was introduced to the market a couple of years ago, while the Gear has been in the market for quite some time - the first of its kind was announced in August, 2014. But both smartwatches tug it out in the market and consumers side one against the other.

While both smartwatches can help users deal with fitness and personal health issues, the Apple Watch 2 cannot work without an iPhone, but the Samsung Gear S3 can function with only a SIM card.

Both smartwatches differ in terms of screen size, display resolution, dial shape, screen, internal processor, LTE, memory, operating system, battery capacity, accelerometer, gyroscope, GPS sensor, heart rate sensor, Wi-Fi, Bluetooth, NFC, water resistance, and prices among other aspects.

The Apple Watch 2 complements any user as a fitness accessory with heart sensor functions among other things, and it's able to withstand in a water depth of up to 50 meters without any disruptions. But the problem is that the Apple Watch cannot operate an LTE connection like the Gear S3 does. Also, the Gear S3 smartwatch can work perfectly without a mobile phone to make it work.

The Apple watch 2, as many consider, is not quite appealing to the eyes. David Gewirtz, reporting at ZDNet writes about the first Apple Watch.

"Now that Apple has showed us their first watch, all I can think of is that someone sacrificed useful function to bling. Internet-based wrist-rubbing? Somehow, I can't see Steve Jobs allowing that."

As previously reported, the Samsung Gear S3 is available for pre-order, while the Apple Watch 2 is now available and featured on the company's website.