【Active Noise Cancelling】 The Liberty Air 2 Pro features targeted active noise cancellation, effectively blocking out surrounding noise. This provides an environment where you can focus on your music or calls. 【Comfortable Fit】 Multiple sizes of ear tips are included, allowing you to choose the fit that suits you best. Designed for comfortable use even over long periods. 【Convenient Charging Case】 A charging case is included, making it easy to carry and charge on the go. Bluetooth compatible, it can connect to various devices. - Brand: soundcore - Model Name: Liberty Air 2 Pro - Features: Active Noise Cancelling - Bluetooth: Yes - Accessories: Ear tips (multiple sizes) - Charging Case: Yes - Manual: Yes I opened the package after purchase, but I haven't used it at all. Please consider purchasing if that's acceptable. Thank you for viewing.