Amazon offers the Willnorn SoundPlus Dual-Driver Portable Wireless Bluetooth Speaker w/ Up to 24 Hours Playtime for a low $19.99 via coupon code "AW5EXTBZ" FREE shipping on orders above $49 or with Amazon Prime. Limited time offer. You save $32 off the price! That's the lowest price we could find. This has a 4.6 out of 5 star rating with over 180 reviews.

• 2x 4 watts high-end low-impedance speakers larger than normal 10 watts
• One big size passive subwoofer in a portable size box
• Up-to 24 hours playtime powered by a built-in high capacity Li-ion battery
• Latest Bluetooth v4.1 with A2DP, connect fast and stable. NFC quick match
• Handheld size and IPx5 Waterproof to take ourside party