MobileCityOnline via Amazon offers the Jarv Joggerz Pro Sports Bluetooth 4.1 Headphones in Black/Gray, model no. BT501-BLK, for $25.99. Coupon code "GC8AG6A8" cuts it to $15.99. Plus, Prime members bag free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $6.22.) That's $4 under our February mention and the lowest total price we've seen. (It's also a current price low by $19.) They feature a frequency response of 30Hz to 15kHz, in-line mic and controls, and rechargeable battery.