Newegg offers the Urge SoundBrick Plus NFC Bluetooth Stereo Speaker in Black for $29.99. Coupon code "EMCATAR74" cuts it to $23.99. With free shipping, that's a buck under yesterday's mention and the lowest total price we've seen. (It's also a current low by $5, outside of the mentions below.) It features NFC pairing technology, two 3-watt speakers, up to eight hours of playback, and microphone.
A couple of close prices: Tanga sells it in five colors for $21.99 plus $2.99 for shipping; BuyDig offers it in four colors for $24.99 with free shipping.