The next generation of Soundcore’s true wireless earbuds for workouts. Tuned to maximize bass and push your workouts to the limit with hi-octane audio fuel. Combining unique acoustic design with finely adjusted audio algorithms gives your music an intensity you’ve never experienced before. Topped off with easy-to-use controls and clear hands-free calls, Spirit X2 is the ultimate workout buddy. BassTurbo: A uniquely designed acoustic chamber design that adds extreme bass to the mix. Outrageous Bass: Oversized 12mm drivers, and BassUp technology ensure enormous audio power. aptX: Lossless Bluetooth audio transfer for flawless sound. Sweatproof: SweatGuard technology effortlessly defends against sweat and other threats. IP68: True wireless earbuds that can withstand rain and even complete submersion in water. 9-Hour Playtime: Get a week of gym sessions on a single charge then extend that to 36 hours with the included charging case. Extreme Comfort: Super-secure fit means that Spirit X2 sit tight when you’re pushing your workout limits. Crystal-Clear Calls: cVc 8.0 noise-cancellation technology isolates your voice and removes background noise for a clear hands-free experience. Stereo or Mono: Listen via either or both earpieces whenever, wherever. Note: Spirit X2 has an IP68 Waterproof rating under IEC standard 60529, which means they can withstand submersion in water at a maximum depth of 2 meters for up to 30 minutes. They are not designed for swimming, showering, or exposure to pool or ocean water. Do not use Spirit X2 in a sauna or steam room. Waterproofing effectiveness may reduce over time. The charging case is not waterproof. While enjoying your listening experience, ensure you pay attention to personal safety Specifications: Model: A3918 Audio Sensitivity: 101dB SPL 1KHz 0dBFS Frequency: 20Hz-20kHz FPC Antenna Return Loss: Typical: -14dB Limit :-12dB Microphone: MEMS Omnidirectional Mic Audio Source: iPhone, iPad, Samsung, Blackberry, Nexus, Smartphone, Computer, PC, Notebook, MP4, MP3, and more Proprietary Technology: BassUp, SweatGuard, BassTurbo What’s In The Box: Soundcore Spirit X2, Charging Case, EarTips x 5 pairs, EarWings x 3 pairs, USB-C Cable, 18-month warranty, and friendly customer service.