Title: Xiaomi Redmi Buds 4 Pro Earphone BT5.3 Active Noise Cancelling 3 Mic Wireless Headphone 36 Hours Life Smart Noise Cancellation Ergonomic Design Features: [3-mic AI call noise cancellation help you be heard clearly in noisy environments] Accurately pick up people"s voices while effectively reducing background ambient noises. [Dual transparency mode allow you to ear ambient sounds without taking out the earbuds] Switch to enhance voice mode for clearer voice. You can have a relaxed conversation with your friend with your earphones on. [Co-axis dual dynamic with different size recover more sound details] A high-pitched sound is clear and not distorted while a low-pitched sound is rich and pure with more refined sound quality. [36-hour ultra-long battery life let you continue to enjoy your music] 9hours single use (with noise cancellation off) and 36hours overall battery life (with noise cancellation off). [Android with 360 degrees surround sound effect] You could get into immersive scene everywhere. Specification: Product model:M2132E1 Headset input parameters:5.25V 160mA MAX Charging case input parameters:5V 0.5A MAX BT?Version: 5.3, Range:10m Play Time(50percent volume): 9h ANC OFF (Earbuds)/36h ANC OFF (With Charging Case) Charging Port: USB Type C Waterproof level: IP54 Package List: Earphone*1 pair Charge case*1 Tips (S/M/L)*1 Type-c cable*1 User manual*3 Note: The battery usage may be slightly different due to the actual usage. There is a little of difference according to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. ?