Product Name: C-Yark 30 Watt 6.5 Inch Constant Voltage Best Buy PA System Ceiling Loudspeaker Model NO.: CF-630V Brand: C-Yark Certification: ISO9001, CCC, CE WORD nChannels: Without Usage: Accept, Expand Volume, Monitor, High Fidelity, Fire Control,Shop,Supermarket Radiation Mode: Direct Radiation Type Style: Head-mounted Transducer Principle: Permanent Magnetic Speaker Cone: Paper Cone Transmission Mode: Wire Category: Speaker Brand Name: C-Yark Certificate: CCC,Ce,ISO9001 Lead Time: 5-15 Days Place of Origin: Guangzhou,China HS Code: 8518290000 Rated Power: 10W Sensitivity: 91