Meritline offers the iKANOO BT014 3,000mAh Power Bank Bluetooth Speaker with Microphone in Black or White for $34.99. Coupon code "MLCKX07YNL1" cuts it to $21.99. With free shipping, that's the lowest total price we could find for any color by $18. It features a 3,000mAh portable battery for cell phone charging, 3.5mm aux input, Bluetooth 3.0, and hands-free calling button. Coupon expires after 100 uses.