Specifications: 60ft/18M Wide Range Bluetooth Coverage Environmental Noise Reduction Acoustic Echo Cancellation Voice Balancing Technology Small and Portable 2500mAh Built-in Battery for 8 Hours Conference Features: INTELLIGENT VOICE ENHANCEMENT - Customized DSP (digital signal processing) algorithms is applied to optimize voice and reduces background noise in real time which ensure your voice is always clearly and legible. ELIMINATE AMBIENT NOISE - Acoustic Echo Canceller Block removes echoes, reverberation, and unwanted added sounds and therefore provides a crystal clear talk enviroment for you and your teams. TALK WHILE WALKING AROUND - Voice balancing technology is applied to auto recognize the distance between sound source and mic in order to auto adjust the voice volume. it allows the conference speaker to pickup your voice while you walk around. EASY to SETUP - AIHOOR Bluetooth speakerphone is compatible with Smart Phones, PC, Laptops and other devices which support Bluetooth. It works with popular conference apps such as Facetime, Zoom, Skype, Goto Meeting and etc. PORTABLE & BUILT-IN BATTERY - Compact and portable design allows you to carry this speaker to anywhere without burden. The speaker can be used while charging and supports fast charging, 15 minutes of charging allows 2 hours of talk time. Package included: Conference Speaker x1 USB-C Charging Cable x1 User Manual Warranty Card Quick Guide Card