Featuring Skull-iQ Smart Technology. Skull-iQ is a powerful technology that runs innovative voice features and enables new upgrades via the Skullcandy App. Rail ANC's upgradability offers the promise of new and innovative features. Simplify your listening with Hands-Free Voice Control in 5 languages, Native Voice to prompt media apps, Spotify Tap, Take Photo UI and Voice Command. Featuring customizable button functions, Spotify Tap, take photos, multipoint pairing, Auto On/Off, and Activate Assistant. Supreme Sound with 4-mic Hybrid ANC UI and Voice Control, Mimi Personal Sound tuned to your hearing, Adjustable Stay-Aware mode in App, Clear Voice Smart Mic, Low latency audio mode, and Dual noise reducing mics in each bud. Fearless Use with wireless charging case, Built-in Tile Technology, up to 27 hours of total battery (ANC ON) and 38 hours (ANC OFF), Rapid Charge, and IP55 sweat, water and dust resistant.