Here is a thread to discuss the Samsung Gear Circle and how it operates with the Gear S. Feel free to ask a question about the device, or if you own a gear circle, please post your experiences with it.
Samsung Gear Circle Specifications:
Speaker - 12Φ Dynamic
Microphone - Single MEMS
Codec - SBC, apt-X, Samsung HD
Connectivity - Bluetooth 3.0 BT Profile: HSP / HFP / A2DP / AVRCP Multi Point Connection, Micro USB (Charging only)
Sensors - Magnetic Sensor (Hall IC), Touch Sensor
Battery - 180mAh Li-ion (Standby 300h / Talk 11h / Play Time 9h)