ENC Noise Cancellation for Clear Calls. Equipped with single-microphone ENC noise cancellation, this device ensures high-quality call clarity by reducing background noise, making every conversation crystal clear. Secure and Lightweight Fit. Designed for an ultra-lightweight feel that snugly fits around the ear, this device stays in place even during intense activities, providing a comfortable and secure fit for all-day wear. Skin-Friendly Silicone Material. Made from skin-friendly silicone that conforms to the shape of your neck, this device stays in place without causing discomfort, even during vigorous exercise, ensuring no slipping or irritation. Automatic Magnetic Snap Storage. Features an automatic magnetic snap design for easy storage, preventing tangling and making it convenient to carry and store when not in use. Fast Charging Capability. Enjoy up to 6 hours of music playback with just a 10-minute charge, ensuring you stay powered up even during the busiest days. Specifications: Bluetooth version 5.3 Battery capacity 180mAh Charging time 2 hours Usage time: 40 hours of music, 35 hours of calls Material: PC and silicone Headphone cable length: 93cm Weight: 30g Waterproof level: IPX4