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