General Talk time: 10 hours Stand-by time: 7 days Operating temperature: -10?C – 55?C (14°F – 131°F) Dimensions: Headset 70.7 mm x 36.6 mm x 13.7 mm (2.8 in x 1.4 in x 0.5 in) Weight: Headset 21 g (0.75 oz) Bluetooth Headset Profile (HSP) Hands-Free Profile (HFP) Advanced Audio Distribution Profile (A2DP) Audio Video Remote Control Profile (AVRCP) Bluetooth 3.0 Intercom Working distance: up to 900 meters (980 yards) in open terrain Audio Advanced Noise Control™ Wind noise reduction Built-in SBC Codec Wide volume control Sample rate: 48 kHz (DAC) Battery Charging time: 2.5 hours Type: Lithium polymer Certificates FCC, IC *Example image EU declaration of CE-Conformity