Apple CEO and co-founder Steve Jobs had once said that the 9.7in display of Apple's tablet was the perfect size, sending signal that the company may not tweak the design or introduce different sized iPads.

But, we have observed over the years that such statements don't always stick with Apple and it has been proved right once again as Apple has launched tablets of different tweak and design. It is notable that the sales of iPad have been declining 20% year over year and the main reason for this is that people are now preferring large-screen size phones than tablets.

But this is not a good news for Apple as it wants people to buy new gear every year. This is why the Cupertino-based firm releases new iPad models every year.

At its March 1 product launch event, Apple unveiled a 4in iPhone SE and a new iPad Pro. The new model is called the iPad Pro and it is smaller than the original 12.9in model, instead being the same scale as the iPad Air 2 with a 9.7in display. The design of the new iPad Pro 9.7in is very similar to the iPad Air 2.

iPad Air 2

Display: 9.7-inch 2048?1536 pixel at 264 pixels per inch

Colors: Silver, Space Grey, Gold

Storage: 16GB, 64GB, and 128GB

Processors: 64-bit A8X and M8

RAM: 2GB

Touch ID: yes

Cameras: front 1.2MP 720p HD camera and a rear 8MP 1080p HD camera

Connectivity: 802.11a/b/g/n/ac, Bluetooth 4.0, GPS, optional 4G

Size: 238.8 mm ? 167.6 mm ? 6.1 mm

Weight: 437 grams

iPad Pro (12.9in)

Display: 12.9-inch 2732?2048 pixel at 264 pixels per inch

Colors: Silver, Space Grey, Gold

Storage: 32GB, 128GB, and 265GB

Processors: 64-bit A9X and M9

RAM: 4GB

Touch ID: yes

Cameras: front 1.2MP 720p HD camera and a rear 8MP 1080p HD camera

Connectivity: 802.11a/b/g/n/ac, Bluetooth 4.2, GPS, optional 4G

Size: 305 mm ? 220 mm ? 7 mm

Weight: 710 grams

iPad Pro (9.7in)

Display: 9.7-inch 1536?2048 pixel at 264 pixels per inch

Colors: Silver, Space Grey, Gold, Rose Gold

Storage: 32, 128GB, and 256GB

Processors: 64-bit A9X and M9

RAM: 4GB

Touch ID: yes

Cameras: front 5MP 720p HD camera and a rear 12MP 4K HD camera

Connectivity: 802.11a/b/g/n/ac, Bluetooth 4.2, GPS, optional 4G

Size: 240 x 169.5 x 6.1 mm

Weight: 437 grams