Altatac via Rakuten offers the refurbished GoPro Hero5 Black 4K Action Camera for $272.95. Coupon code "ALT35G" drops that to $237.95. With free shipping, that's $82 below our July mention of a new unit and the lowest price we've seen. (It's $52 under the best deal for a new unit today.) This 4-oz. camera is waterproof up to 33 feet without a housing and features a 2" color touchscreen LCD, up to 4K video recording at 30fps, 12-megapixel photo resolution, voice control, three microphones, WiFi, Bluetooth, micro-HDMI, microSD slot, and rechargeable Li-ion battery. Deal ends January 14.

Note: This coupon can only be used once per account. (You must be signed in to use it.) A 90-day warranty is included, but it's unclear who backs it.