Nouna Wireless | Headset | Wearing style Head-band | Calls/Music | Headset type Binaural | Colour Pink | Volume control Button | Foldable Yes | Designed for children Yes | Adjustable headband Yes | Connectivity technology Wired & Wireless | 3.5 mm connector Yes | USB connectivity Yes | Bluetooth Yes | Ear coupling Supraaural | Headphone frequency 20 - 20000 Hz | Headphone sensitivity 92 dB