Sorry, the browser you are utilizing is no longer supported by Shutterstock. Remember to upgrade your browser to continue. As I said, holding down the multifunction button helps you to toggle through 3 sound modes. I mentioned the default sound modes, but you can increase more sound modes in the https://allhealthmarket.com/product/smart-wearables/smart-electronics-smart-wearables/headsets/original-lenovo-gm2-pro-5-3-earphone-bluetooth-wireless-gaming-earbuds-headsets-headphones-hd-call-dual-mode-gaming-headset-with-mic/