Up to 11 hours, the case provides additional 29 hours (ANC OFF); Up to 8 hours, the case provides additional 21 hours (ANC ON), Bluetooth Version: V5.4.
50dB Hybrid ANC Noise Cancellation, Â Sound360 Spatial Audio, AI Noise Cancellation, Space Capsule Design Concept, Up to 7 hours, the case provides additional 25 hours (ANC OFF); Up to 5 hours, the case provides additional 18 hours (ANC ON)
They work great with my android phone and the sound is incredible. There is plenty of bass, just like I like and everything comes through crystal clear.
A fun range of color options and a novel design feature on the case won't make up for the poor sound quality, noise cancellation, design material and feature set. The low price does to an extent, but there are same-price alternatives that offer more.