F-Color via Amazon offer its F-Color Waterproof Dog Training Collar 2-Pack for $49.99. Coupon code "COLORF38" cuts that price to $39.99. With free shipping, that's $20 off and the lowest price we could find. It includes a dog training manual and features LED lights, 2,600-ft range, shock, tone, and vibration modes. Deal ends September 17.