Smart Watch under 40USD ?

I want to buy a smart watch under 40 USD.
Is really for not intensive use, I am curiosity…

I need step counter and heart rate, other are optional (of course call reminder).
There are tons of options, … Please can comment your experience with some of this cheap items?

I do not have much arm … I do not want a heavy brick in my hand

I have good experience with No.1 watches.
http://en.001phone.cn/product-html
Site is not very good so you can look here.
http://www.gearbest.com/no.1-smart-watch-\_gear/

i also need a smart watch, with long battery life( at least 3 days) and always on display
mono-color LCD is acceptable

all the chinese web sites have cheap android watches…
amazon too
i;d pick your features then search amazon and read reviews

wle

Thanks for your comments, I do not trust much of the reviews that I read in amazon…

I have seen some of the N.1 watches that comment XXX-Man, and seems fine for me, I must decide, ……

I use No.1 G6 right now and it’s ok for price.

Yes !! G6 is really my favourite option.
TPU strap or Steel band?

Steel band. I hate TPU feeling on my hand.

I have a No.1 G5 that looked great and had great reviews, but I can’t recommend it. Firstly the heart rate monitor simply does not work. It always reports the same heart rate. The battery also does not last very long and there are not enough watch face options to make it look good. Of course YMMV