COMFORTABLE AND SECURE FIT - These durable, wireless earphones with a secure active fit and wing-free ergonomic design are specifically designed for an active lifestyle. IP57 water- and sweatproof. INNOVATIVE NOISE CONTROL - These noise cancelling earphones have four microphones for clear calls on-the-go. Hear your surroundings with adjustable HearThrough technology or activate ANC to suppress ambient noise to keep you focused. OPTIMAL PERFORMANCE - Customizable equalizer and bass boost for powerful sound. Use only one earbud with Mono Mode. Each earbud offers up to 7 hours battery; up to 28 hours of battery life total with the case and fast-charge. SEAMLESS CONNECTION VIA BLUETOOTH 5.2 - Connect your Android phone with Google Fast Pair, quickly play your songs with Spotify Tap Playback or ask Alexa (Android 6.0 or higher), Siri or Google Assistant whilst on-the-run.