OontZ by Cambridge SoundWorks via Amazon offers the Cambridge SoundWorks Oontz Angle 3 Bluetooth Speaker in Black for $34.99. Coupon code "IntroOA3" cuts it to $24.99. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $5.25.) That's $5 below our mention from a month ago, $75 off list, and the lowest total price we've seen. This 10-watt speaker is compatible with most Bluetooth-enabled devices and features a 33-foot range, purported rechargeable 7-hour battery life, IPX5 water resistance, and microphone.
Of note, it's also available in Red for $25.99 via the coupon above with free shipping. (Prime isn't required for free shipping.)