ResponseBridge via Amazon offers the Shidu T2 Portable Bluetooth 4.2 Speaker for $39.99. Coupon code "THANKURB" drops the price to $19.60. With free shipping, that's the lowest price we could find by $18. This 4-watt speaker features a 33-foot range, Bluetooth 4.2+EDR, and up to five hours of playback per charge.