A4C offers the Boom by Polk Audio Swimmer Jr. Waterproof Bluetooth Speaker
in Blue, model no. SMJBE-A, Black, model no. SMJBK-A, or Gray/Mint, model no. SMJGM-A, for $24.95. Coupon code "JUNE20" drops the price to $19.96
. With free shipping
, that's the lowest total price we could find by $9. This IPX7-waterproof speaker can be submerged in up to three feet of water for up to 30 minutes. Features include a 240Hz to 16kHz frequency response, flexible mounting tail, built-in microphone, rechargeable Li-ion battery, and eight hours of play-time between charges. Deal ends today.