Harman Audio offers the refurbished JBL Under Armour Wireless Bluetooth Headphones for $39.99 with free shipping. That's $10 under our January mention and $60 less than the lowest price we could find for a new pair. They're sweat-proof and feature an inline 3-button mic, 8-hour battery, and 10Hz to 22kHz frequency response. Deal ends May 7.

A 1-year JBL warranty applies.