Apple looks forward to manufacturing six million smartwatches during the next quarter. And if you are planning to buy Apple Watch, there are a few things you need to keep in mind.

First of all, one needs to understand how to operate the watch. This is because the screen of the watch is very small and there are only two tiny buttons, which are located on the side.

There are 17 very small circles on watch and these circles have been arranged in a repeating three/four pattern on its rectangular face.

Apple has also told about the battery life of the smart watch. According to Apple, "All-day battery life is based on 18 hours with the following use: 90 time checks, 90 notifications, 45 minutes of app use, and a 30-minute workout with music playback from Apple Watch via Bluetooth, over the course of 18 hours".

According to Daniel Matte, who leads market researcher Canalys' wearables research, this much battery life of the watch is fine.

Matte told FoxNews. com that the watch could work a day and a half to two days for the average user. But battery life is not that fine for other situations. For instance, according to Apple, only 6.5 hours of battery life is yielded by the 'Audio Playback Test', whereas 'Talk Time Test' has only 'up to 3 hours' of battery life.

According to the tech giant, the 'Workout Test' yields only 'up to 6.5 hours' with use of Apple Watch and software paired with an iPhone, together with the heart rate sensor on and a workout session active.

Matte added, while talking about the three hour rundown time on phone calls, that battery life of smart watch is a complicated thing.