Talk time: 10 hours Stand-by time: 7 days Working distance (intercom): up to 900 meters (980 yards) In open terrain Operating temperature: -10°C ~ 55°C (14°F ~ 131°F) Dimensions (main module): 145.0 mm x 115.0 mm x 78.0 mm (5.71 in x 4.53 in x 3.07 in) Profile: Headset Profile, Hands-Free Profile (HFP), Advanced Audio Distribution Profile (A2DP), Audio Video Remote Control Profile (AVRCP) Bluetooth 3.0 Built-in SBC Codec: Advanced Noise Control™, wind noise reduction, wide volume control, Sample rate: 48kHz (DAC) Charging time: 2.5 hours Type: Lithium polymer battery CE, FCC, IC