... For small communications products, such as GSM, CDMA, 3G mobile phones, cordless phones development, Bluetooth products Product Name: M4070 ... BoxApplication:for small communications products, such as GSM, CDMA, 3G mobile phones, cordless phones development, Bluetooth products and maintenance. Specification: ... to ask.Company environment:Certificates: High Isolation wireless Bluetooth shielding Box(70dB)