Marshall Bluetooth Speaker $80

This Marshall Emberton Bluetooth Portable Speaker is on sale for $79.99 at Woot. Shipping is free with an Amazon Prime account or when you sign up for a free Prime trial. Otherwise, it adds $6. Other retailers are charging $120 or more! It features a 20-hour battery life, and IPX7 waterproofing means it can be submerged in up to 3' of water for 30 minutes.