iPad Pro 9.7 + Smart Keyboard weights

Here are the specs:

• iPad Pro 9.7 Wifi model: 437g
• Smart Keyboard: 230g
• Smart Cover: 110g
• 3rd Party Cases: 100~300g

And for comparison, here are the laptop specs:

• MacBook Air 11 inch: 1.08kg
• MacBook Air 13 inch: 1.35kg
• MacBook Pro with Retina 13-inch: 1.58kg
• MacBook Pro with Retina 15-inch: 2.04kg

Cited from from Apple official website with latest model.
http://www.apple.com/macbook-air/specs.html
http://www.apple.com/macbook-pro/specs-retina/

That means iPad Pro 9.7 + Smart Keyboard is 667g, about 62% of lightest MacBook Air 11 inch(1.08kg), 413g lighter.

I considered about Apple's Smart Keyboard as the first option, I also got the chance to try my friend's Smart Keyboard, but at that time I felt it's a bit heavy. Maybe because I was using a iPad mini so when upgraded to iPad Pro 9.7, the tablet itself already felt heavier. I've looked for some 3rd party cases but a lot of them weight more than the Smart Keyboard(more than 230g). There are some "light-weight" 100g-ish cases but all feel not attractive...

So I ended up going back to Smart Keyboard. If it's almost the same weight, a portable and comfortable keyboard could help me in various ways I couldn't imagine(and it did!), the overall weight of the combination is 437g + 230g = 667g, almost half of MacBook Air 13-inch.

Note that there's no official data from Apple about the Smart Keyboard, I found it on some blogs, and some says it's 225g some says 230g.