This deal has ended.
Shop4Tech.com offers this Waterproof Ion Sport Bracelet Watch in several colors for $3.95. Coupon code FF15 cuts it to $3.36. With free shipping, that's the lowest total price we could find for such a watch by $4. It features an elastic silicone design, date display, and is waterproof to 33 feet. It purports to release healthy negative ions. There is no sales tax (except CA). Note that you won't be able to choose the color.