- Model Name: Soundcore Liberty 4 NC - Brand Name: Anker - Included Items: Box, other contents included - Case: None - Color: Navy Thank you for viewing. This is just the earbuds of the Anker Soundcore Liberty 4 NC. I am selling them because I have lost the case. Since there is no case, they are currently out of charge, but they can be used without any problems if you charge them in a case. *Missing: Case *The box and the original accessories inside are all included. The following is a product description: - Ultra Noise Cancelling 3.0: The earbuds not only detect and eliminate external noise, but also instantly measure the shape of your ears and eliminate noise that was previously missed. Provides personalized noise canceling. - Further upgraded basic performance: Basic performance has been enhanced by the installation of a high-sensitivity sensor, large-diameter driver, and a chamber with improved sound insulation. It is now possible to effectively eliminate a wider variety of noises. - Up to 50 hours of long playback: The earbuds themselves can play for up to 10 hours on a full charge, and with the included charging case, you can play music for up to 50 hours. Also, a 10-minute charge provides about 4 hours of music playback. - Functionality ideal for everyday use: Supports various functions such as multi-point connection that can connect to two devices such as smartphones and PCs simultaneously, clear calls with 6 microphones and AI, and IPX4 waterproof standard, so you can use them in various situations such as online meetings, studying, and exercising.