Get up to 14 hours of 360-degree stereo with Ultimate Ears’ WONDERBOOM 4 portable Bluetooth speaker down at $51

Amazon is currently offering the Ultimate Ears WONDERBOOM 4 Portable Waterproof Bluetooth Speaker down at $51.44 shipped in its blue colorway, while alternate colorways start at higher prices. While it may carry a $100 MSRP directly, it only climbs as high as $80 at Amazon, with discounts in 2026 having kept the cost down at this same rate since the end of May. You’ll benefit from a $29 markdown here, giving you the second-lowest price we have tracked – only $2 above the low that last appeared d