Cafago offers the Andoer AN4000 4K WiFi Waterproof Action Camera in several colors (Black pictured) for $39.23. Coupon code "ZD4619MG" cuts that to $34.21. With free shipping, that's the lowest price we could find by $8. Features include a 2" LCD, up to 4K video recording at 30fps, 16-megapixel photo resolution, 170° wide-angle lens, WiFi, USB, SD card slot, rechargeable battery, housing that's waterproof up to 131 feet, and remote control. It comes with multiple mounting options. Deal ends May 30.

This item ships from China, although an estimate of three to six days for arrival is given. (Shipping time may be longer than indicated.)