GearBest offers the Eken 4K H9R Action Camera Kit in Black for $47.99. Coupon code "USDEKEN" cuts the price to $39.99. With free shipping, that's $10 under our Cyber Monday week mention and the lowest price we've seen. (It's the best deal today by $13.) The camera features a 2" 1080p LCD, 4K video shooting, 12-megapixel photo shooting, wireless 802.11n, HDMI port, and waterproof casing to 100 feet. It includes a selection of mounts, a charging dock, a handle bar, and waterproof case. Deal ends March 29.

Note: This item ships from China and may take up to six weeks to arrive. The countdown timer on the product page does not reflect an actual expiration time and resets daily.