Razer Kaira for Xbox. Product type: Headset, Wearing style: Head-band, Recommended usage: Gaming. Connectivity technology: Wireless, Frequency band: 2.4/5 GHz, Wireless range: 10 m. Ear coupling: Supraaural, Headphone frequency: 20 - 20000 Hz, Impedance: 32 ?. Microphone type: Boom/In-line, Microphone frequency: 100 - 10000 Hz, Microphone sensitivity: 54 dB. Battery type: Built-in battery, Battery technology: Lithium Polymer (LiPo), Battery life (max): 15 h