Knocking on Death's Door (Secret Seal Isle Mysteries Book 8)

JBL Charge 6 - Portable Waterproof & Drop-Proof Bluetooth Speaker, Bold JBL Pro Sound with AI Sound Boost, 28Hrs of Playtime, Built-in powerbank & Comes with a Sturdy/Removable Carrying Strap (Black)

JBL Clip 5 - Ultra-Portable, Waterproof & Dustproof Bluetooth Speaker, Big JBL Pro Sound with Punchy bass, Integrated Carabiner, Up to 12 Hours of Play, Made in Part with Recycled Materials (Black)

JBL Go 4 - Ultra-Portable, Waterproof and Dustproof Bluetooth Speaker, Big JBL Pro Sound with Punchy bass, 7-Hour Built-in Battery, Made in Part with Recycled Materials (Black)

Sony SRS-XB100 Wireless Bluetooth Portable Lightweight Super-Compact Travel Speaker, Durable IP67 Waterproof & Dustproof Shower Speaker, 16 Hour Battery, Versatile Strap, & Hands-free Calling, Black

BolaButty Bluetooth Speaker with HD Sound, Portable Wireless, IPX5 Waterproof, Up to 20H Playtime, TWS Pairing, BT5.3, for Home/Party/Outdoor/Beach, Electronic Gadgets, Birthday Gift (Black)

JBL Flip 6 - Portable Bluetooth Speaker, powerful sound and deep bass, IPX7 waterproof, 12 hours of playtime, JBL PartyBoost for multiple speaker pairing for home, outdoor and travel (Blue)

JBL FLIP 5, Waterproof Portable Bluetooth Speaker, Black, Small

Amazon Basics Stereo 2.0 Speakers for PC or Laptop, 3.5mm Aux input, USB-Powered, 1 Pair, Black