Best Buy offers the Logitech Ultimate Ears Boom 2 Portable Bluetooth Speaker in Black, model no. 984-000551, for $106.99 with free 2-day shipping. That's the lowest total price we could find by $10, although we saw it for $7 less during Black Friday week. It features a 3.5mm auxiliary input, up to 15 hours of music per charge, and is compatible with iOS and Android.