HEAR AND BE HEARD: Multi-microphone steerable array for echo and noise reduction keeps the focus on your voice, not the background noise; plus, full duplex audio enables natural, simultaneous conversations without missing a word. WORK ON THE GO: Keep your smartphone charged and ready using your Poly Sync 20+ personal Bluetooth speakerphone, featuring up to 20 hours of battery life. It’s lightweight, IP64 dust-and water-resistant, and comes with its own carrying case. EASY CONNECTIVITY: Connect to your smartphone or tablet using Bluetooth or connect wirelessly to a PC or Mac using the included USB-A BT600 adapter, which enables better audio performance and a more consistent user experience than connecting directly to PC/Mac via Bluetooth; or use the included USB-A cable for a wired connection option. ALL IN ONE: This slim and portable speakerphone for conference calls is also a high-performance music speaker and smartphone charger. Enjoy superior call clarity thanks to the bass reflex system with dual passive sound amplification for natural voice and deep bass. STAY IN CONTROL: Programmable button lets you quickly access favorite functions on your Bluetooth and USB-A speakerphone, including play/pause music, last-number redial, voice assistant, and more, while a highly visible light bar lets you view the call status, even from across the room. PC via USB-A or USB-C cable (using included adapter), wirelessly via included BT700 adapter (Poly Sync 20+) or smartphone with Bluetooth technology. Three-microphone steerable array. Up to 7 ft/2 m. Call answer/end, mute, volume up/down, programmable function button. IP64 dust-and water-resistant.