Home Slickdeals Insignia™ – Waterproof Portable Bluetooth Speaker – Black $30.99 at Best Buy. Slickdeals Insignia™ – Waterproof Portable Bluetooth Speaker – Black $30.99 at Best Buy. By ARCOM - 14 June 2019 105 0 SHARE Facebook Twitter Go to the deal page: Insignia™ – Waterproof Portable Bluetooth Speaker – Black $30.99 at Best Buy.