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, Sound Output Mode: Mono, Sound Effects: HD Voice, Frequency Response: 150 - 7000 Hz, Max Input Power: 10 mW, Sensitivity: 93.6 dB, Diaphragm: 1.1 in, Audio Input Details: Uni-directional - 100 - 10000 Hz, Capacity: 500 mAh, Run Time (Up To): 12 hour(s).