Cambond via Amazon offers its Cambond Bluetooth In-Ear Headphones in Black or Blue, model no. EPS01, for $27.99. Coupon code "DD8RR5B8" cuts them to $21.99. Plus, Prime members receive free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $5.99.) That's $48 off list, $2 under last our July mention, and the lowest total price we've seen. These waterproof and sweatproof headphones feature Bluetooth 4.1, up to a 32-foot range, in-line controls, microphone, dual rechargeable lithium battery with up to 10 hours of playback per charge, adjustable tangle-free wire, flexible ear hooks, and three earbud sizes.