Advanced Hybrid Active Noise Cancellation (ANC): By producing anti-noise to counter any noise it detects from outside and inside your earbuds, our cutting-edge design is able to shut out all distractions and keep you focused on what matters.Note : If the size of the earbud tips does not match the size of your ear canals or the headset is not worn properly in your ears, you may not obtain the correct sound qualities or call performance. Change the earbud tips to ones that fit more snugly in your ear.Specific uses for product : Movies and Gaming THX Certified Earbuds: Tested and optimized by experts in cinematic audio immersion at THX Ltd., the earbuds present a rich, balanced soundstage for all your movies, music and gaming. In-Ear Design: Get a comfortable, secure, in-ear fit and enhanced noise isolation with Comply foam tips. For even more customized levels of comfort or acoustic options, take your pick from 6 additional silicon tips sizes. 60ms Low Latency Connection: Activate Gaming Mode to boost the earbuds’ wireless performance during competitive games and be quicker to aim or react with audio and video that’s more in sync. Quick Attention Mode: You can let outside sound in to increase awareness of your surroundings—useful when crossing the road or conversing with other people. Compatibility-Devices with Bluetooth audio capability, Smartphone app available for Android and iOS, Supported codecs: SBC, AAC customer support contact information: a. US / Canada 1-855-87-25233 (BLADE) b. razersupport.com/contact-us