Lumsing Direct via Amazon offers its Lumsing Wireless Bluetooth Speaker in several colors (Black pictured) for $23.99. Coupon code "DD146541" drops it to $16.79. Plus, Prime members bag free shipping. That's the lowest price we could find by $2. It features Bluetooth 4.0, playback time up to 12 hours, and reception distance up to 50 feet. Deal ends January 21.