Honstek via Amazon offers its Honstek Foldable Headphones in several colors (Black/Blue pictured) for $19.99. Coupon code "FJQIPEZG" cuts that price to $12.99. With free shipping via Prime, that's a buck under our mention from a week ago, $7 off, and the lowest price we could find. They feature a folding design. Deal ends August 6.