Audio Headset bandwidth Wideband Speaker bandwidth Music mode HiFi Speaker bandwidth Speak mode Wideband Microphone bandwidth Wideband Certifications Regulatory Approvals: CE, FCC ID, IC ID KCC, RCM, NCC, TELEC, SRRC Industrial Certifications: Lync / Skype for Business, Avaya, Cisco, Alcatel Lucent and Astra. Battery Battery included Yes Charging time Max. 120 minutes. Connectivity Connection (mini jack, USB, etc) USB/Bluetooth Bluetooth device Yes Operating range Up to 30m/100ft Talk time Up to 10 hours Standby time Up to 15 days Supported Bluetooth profiles A2DP (v1.2), Hands Free Profile (v1.6), Headset Profile (v1.2), AGHFP (v1.6) Bluetooth wireless technology Bluetooth 4.0 Security Pairing, Authentication and Encryption (Bluetooth standard) Paired devices Up to 8 trusted devices, 2 active stand-by Bluetooth connections. General Packaging dimensions (L x W x H) L 21.0 x W 18.1 x H 5.3 cm Weight mono / duo Mono headset 282.1 g, Stereo headset 310.3 gDuo headset 171.1 g, Mono headset 142.5 g Whats in the box Pouch, Evolve 65 Headset, Warning leaflet, Warranty leaflet, Quick Start Guide, Foam inlay (available for DUO only) Warranty 2 years