Playback and noise cancellation functions work normally, but due to battery degradation, the playback time is about 2 hours. A low battery warning will play after about an hour and a half. They can be used immediately after charging in the case. This is not a problem for those who only use them for a short time, but please be aware that they are not suitable for long-term use. The box and accessories are all included. Compact wireless earphones with hybrid noise cancellation. - Model Name: Life P3 - Function: Noise Cancelling - Battery Life: About 2 hours due to degradation - Sound Quality: Enhanced Sound - Color: Black - Charging Case: Yes Thank you for viewing.