Baseus SIMU ANC True Wireless Earphones let you enjoy music and calls with excellent sound quality. With Active Noise Cancellation (ANC) technology, they effectively reduce ambient noise, allowing you to immerse yourself in your favorite tunes or conversations. The earphones also feature Ambient Sound Mode (ASM), which lets you stay aware of your surroundings when needed. With a long battery life of up to 24 hours, you can enjoy your music and calls all day long. The earphones have a comfortable and secure fit, and they come with different ear tip sizes for a customized fit.