Baytek Digital via Amazon offers the Baytek PartyMix Portable Bluetooth/NFC Speaker
in four colors (Black pictured) for $21.99. Coupon code "JQK99GIB" cuts it to $16.99
. Plus, Prime members receive free shipping
. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $6.63.) That's $3 under our May mention and the lowest total price we've seen. (It's also a current low by $7.) It features a 30-foot wireless range, 8-hour battery charge, built-in mic, USB, microSD card slot, and auxiliary input.