Razer - Through the inter-device color synchronization on Razer Synapse, you can personalize and coordinate your Razer Kraken 7.1 Chroma USB gaming headset to glow in-sync with all your other Chroma-enabled Razer
Razer Kraken USB vs. Razer Kraken 7.1 v2 Gaming Headsets – techbloggingfool.com