Talking of dates, all 4 are powered by Seiko’s 6R35 motion, which runs at 21,600 vph and presents an influence reserve of 70 hours. The motion does supply a date show and all three have the aperture tucked between the markers at 4:30. Whereas far (far) from my fav placement, I’m keen to order any nitpicking till I get an opportunity to have one on my wrist. Pricing for the SPB313 and 315, each of which embody a bracelet, is $1,100. In case you go for the SPB317 and its black rubber strap, that worth drops to $900. Not dangerous in any respect.