Body Material: Aluminum, Headband Material: Foam, silicone, Earpad Material: Leatherette, Recommended Use: Portable electronics, computer - communication, Max Operating Distance: 98 ft, Headphones Form Factor: On-ear, Connectivity Technology: Wireless, Wireless Technology: Bluetooth, Bluetooth Audio Codec: SBC, Bluetooth Version: Bluetooth 4.0, Bluetooth Profiles: Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio Gateway Hands-Free Profile (AGHFP), Sound Output Mode: Stereo, Sound Effects: HD Voice, Frequency Response: 150 - 7000 Hz.