As one of its daily deals, B&H Photo-Video offers the Sennheiser adidas OCX 685i Sport In-Ear Headphones in White for $19.99 with free shipping. That's $20 under our January mention and the lowest total price we've seen. (It's also a current low by $9.) They feature a frequency response of 18Hz to 20kHz, in-line smart remote and microphone, and 3.9-foot cable. Deal ends today.