LogiLink BT0014. Frequency response: 2.402 - 2.480 Hz. Interface: Bluetooth, Headphone connectivity: USB, Bluetooth profiles: HFP, HSP. Width: 47 mm, Depth: 117.5 mm, Height: 15.5 mm. Operating temperature range (T-T): -10 - 50 °C, Storage temperature range (T-T): -20 - 80 °C. Certification: CE, RoHS