Sharper Image SBT617BKBK Rugged Outdoor Bluetooth Speaker, Splash-Proof & Shockproof, Portable & Rechargeable Wireless Sound System The Rugged Bluetooth Speaker from Sharper Image is built to withstand rough-and tumble outdoor situations, with splash-proof of ipx5. Its shock-absorbing design ensures continues play, while its splash-proof construction makes it a safe bet for outdoor setups. The speaker's sturdy built-in strap slides out for easy carrying and retracts when not in use. Use Bluetooth for wireless listening or plug in with an aux-in cable (included). The Rugged Bluetooth Speaker has a built-in microphone to take hands-free phone calls, and is rechargeable for on-the-go adventure. Features: Durable splash-proof and shockproof design. Connect devices wirelessly via Bluetooth. Strap pops out and retracts for easy carrying. Rechargeable battery for hours of use. Aux-in input (cable included). Answer phone calls with the built-in mic.