Smartwatch for iPhone under $100?

Father's Day is coming up and I really want to get my dad a smartwatch. I have an $100 amazon gift card that I want to use on his present so please have a link to the product on amazon. I'd prefer if it is under $100 but the highest I can go is $130. Black color is preferred but as long as it's waterproof, works with iPhone, and receives texts and emails, I'm fine with another color.

Everything out there right now is just a gimmick that no one has interest in.

Man you don't even need to spend full $100. Sony SmartWatch is giving 53% off till fathers day. So you can get it for 70$ from this link
http://www.amazon.com/...007VG6ZC8/

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