Save on Ultimate Ears - MEGABOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Cobalt Blue with a Best Buy promo code

Checkmate is a savings app with over one million users that have saved $$$ on brands like Best Buy.

The Checkmate extension automatically applies Best Buy discount codes, Best Buy coupons and more to give you discounts on products like Ultimate Ears - MEGABOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Cobalt Blue.