Walmart offers the refurbished Apple Watch Series 4 GPS 40mm Aluminum Sport Smartwatch in Silver/White or Space Gray/Black for $339 with free shipping. That's $46 less than the best price we could find for it new elsewhere. Features include: W3 dual-core processor 324x394 OLED display 16GB internal storage 802.11n wireless, Bluetooth 4.2, and GPS 18-hour battery life watchOS 5 Note: No warranty information is provided.