He's wearing a 「クロニック（CHRONIC）」CH-046 model (I think CH-046 Col1, not too sure), in which, rakuten priced it at 29,000 yen (RM995) (the glasses). Normal market price is around 30,450 yen (RM1044) . As for his watch, I am unable to find the exact model. But this one looks the most similar to the one he's wearing (except the strap is different). It's Graham Chronofighter. Model: unknown. Price in yen: One million (RM34000). According to the tv magazine, the ball pen yukawa sensei uses is Dupont's Medici, worths 150,000 yen (RM5143)!!!! (the same ball point pen he used to dismantle bomb and saved Tokyo and Utsumi and himself) and the suit he often wears is Giuliano Fujiwara, price unknown.
....that means he is really well-paid.
By the way click Read More link for a very interesting fact in one of the picture above! Die hard fans will know, I didn't.
Of course it belongs to Masha.