Meeteasy MVOICE 8000 EX-B Expandable Bluetooth Speakerphone for Softphone and Mobile Phone Conference Call (Expansion mic Included) Description Features: Expandable to have more microphone for large conferences Connect to cell phone via Bluetooth, turn the mobile phone into a conference phone USB connection to PC for web-conferencing and Video conferencing Echo cancellation eliminates acoustic echo Noise cancellation removes ambient room noise Product Details: Recommended Uses For Product: 对于电脑 Brand: Meeteasy Model Name: MVOICE 8000 Connectivity Technology: Bluetooth, USB Connector Type: USB Special Feature: Built In Microphone Compatible Devices: Smartphone Color: Black Polar Pattern: Bidirectional Audio Sensitivity: 93 dB Item Weight: 4.01 pounds Package Dimensions: 16.25 x 14.25 x 4.55 inches Country of Origin: China Batteries: 1 Lithium Ion batteries required. (included) Is Discontinued By Manufacturer: No Date First Available: November 12, 2017 Color Name: Black Compatible Devices: Smartphone Connector Type: USB Battery type: Lithium Hardware Platform: PC Power Source: Battery Powered