Anker Soundcore Liberty 4 NC True Wireless Earbuds with Ultra Noise Cancelling Wireless Ambient Sound Up To 50 Hours of IPX4 and PSE Technical

Ultra Noise Cancelling 3.0: The earphones not only detect and eliminate external noise, but also instantly measure the shape of your ears to eliminate noise that previously was missed, providing personalized noise cancellation. Further upgraded basic performance: High-sensitivity sensors, large-diameter drivers, and chambers with improved sound insulation have further enhanced basic performance, allowing for more effective cancellation of a wider range of noise. Up to 50 hours of playback time: The earphones offer up to 10 hours of playback time when fully charged, and up to 50 hours of playback time when used with the included charging case. A 10-minute charge provides approximately 4 hours of playback time. Functionality ideal for everyday use: Supports various functions such as multi-point connection that allows simultaneous connection to two devices such as smartphones and PCs, six microphones and clear calls using AI, and IPX4 waterproof standard, making it suitable for a variety of situations such as online meetings, studying, and exercise. Package contents: Main unit, charging case, ear tips (5 types), USB-C & USB-A cable, safety manual, quick start guide, technical conformity mark certified product (frequency band: 2.40-2.48GHz) /