Oh well, the last few days to decide

1) Aesthetically I like both, a little more the Tissot because the design it's simple and perhaps more suitable for his age.
2) I thought of a watch for diving, but this watch is to wear every day, and watches for diving I do not like aesthetically, they are all "big"!
The Tissot and wr200mt and citizen wr100mt
3) I know that the recipient likes the light clock... the Citizen is titanium, tissot weighs 140gr (0,31 lb)
The Tissot is more beautiful in my opinion, but perhaps citizen is the right choice because one day the customer has said: "I don't like wearing heavy watches"
If a person says this, you takes a tissot weighs 140gr (0.31 lbs)?
At the end the only thing that doesn't make me decide is the weight!
I do not wear watches, in your opinion, a watch that weighs 0.31lb, it's heavy? Help me to decide please

thx!