Land Line Phone Adapter<br> Bluetooth Version: 3.0<br> Operating Range Up to 10 meters<br> Bluetooth Version: 3.0<br> Supported Profile: Audio gateway in headset profile<br> Frequency: 2.4 to 2.4835 GHz (ISM band)<br> Operating Range: Up to 10 meters<br> Phone jack: Two RJ-11 ports (one for line in; one for extension)<br> Regulator: Internal 1.8V regulator<br> Antenna: Internal PCB antenna<br> Operating temperature: -5 to 50 Degree Celsius<br> Adapter: Input: AC100 to 240V, 50/60HZ; Output: DC6V, 300mA<br> Support stereo sound, supports a variety of Bluetooth headsets<br> Button: pair button, on/off button<br> Product Dimensions: 89x45x104 mm(L x W x D)<br> Product Weight: 94g