GT9664B1 is a low-cost and low-power consumption
module which has all of the Bluetooth functionalities. The highly integrated GT9664B1 SIP module makes the possibilities of Bluetooth headsets and other applications.

The GT9664B1 SIP module fully supports the Bluetooth 4.0 dual mode (BR/EDR/LE) operation and the output power can support class1.5. The SIP module provides UART interface / audio PCM interface for Bluetooth.

The SIP module is specifically developed for Smart phones and Portable devices.