Alpine AD-SPK1 Turn1 Waterproof Bluetooth Portable 11" Speaker The AD-SPK1 Turn1 Waterproof Bluetooth Portable 11" Speaker enables you to listen to your music from anywhere from poolside to fireside. This portable speaker produces 40-watts of powerful sound and is designed to be clear even when outside. The Turn 1 is great for outside adventures with over 12 hours of playtime, waterproof capability, and a 3' carry strap for hiking, biking and more! The speaker has a built in mic for hands-free calling and can pair up to two speakers. This speaker is built for music on the go wherever life may take you! Product Highlights Bluetooth Wireless Audio Streaming 12+ Hours Playtime (varies by volume and level and audio content) Waterproof:IPX67 True Wireless Stereo (TWS) Milti-Unit Pairing (Pairs Up to Two Speakers) Built-in Mic for Hands-Free Calling Auto Power Off Dual External Passive Radiators for Open-Air Bass Extension Micro-USB to USB Charge 3 ft Carry Strap Included Product Dimensions: 11.02" x 4.65" x 4.72" Weight 3 lbs, 13 oz Output: 36-Watt RMS, 40-Watts Peak Charging Time : 4-6 hours Charging Voltage: 5V/1.7Z