Razer Kraken BT Kitty Chroma Wireless Over Ear Headphones – Quartz – Drivers: 40mm Dynamic – Impedance: 32 Ohms – Sensitivity: 96dB/mW @1kHz – Frequency Response: 20Hz ~ 20kHz – Microphone: 2x Internal Omni-directional Beamforming – Mic Sensitivity: -38dBV/Pa @1kHz – Battery Life: 20 Hrs/50 Hrs (RGB On/Off) – Connectivity: Bluetooth 5.0 – Latency: 40ms – Materials: Plush Leatherette with Foam – Volume Control – Razer Chroma 16.8M Colour RGB Lighting – RZ04-03520100 – 2 Years Limited Warranty