Summer is upon us (in case you hadn’t noticed), and now’s the time to get break out the warm-weather gear. And if you’re in need of a good summer watch, Amazon is offering some killer deals as a part of its Big Style Sale. From tough outdoor timepieces from Casio’s Pro Trek line to automatic Seiko divers and solar-charging Citizen Eco Drive models, here are some of our favorites:

Eco Drive Chronograph by Citizen $325 $157
