OnePlus Bullets Wireless Z2 ANC Bluetooth in Ear Earphones with 45dB Hybrid ANC Bluetooth Headset (Grand Green, In the Ear). A large 12.4mm dynamic driver can bring deeper bass and powerful beats. The titanium coating dome can better provide rich audio details at each frequency, so that people can clearly feel every audio beat. 45dB Hybrid Active Noise Cancellation combines both FeedForward and FeedBack microphones to maximize frequency range of noise that can be reduced, performing up to 45dB. The advanced 3mics AI call captures and amplifies human voice befittingly when calling by strengthened AI algorithm on software and 3 mics system on hardware. The voice of the caller is clear, and can be heard clearly in the noisy environment. Quick Switch lets you switch between two paired devices, such as your phone and laptop. Users can go from listening to music on your phone to enjoying a movie on your laptop in seconds. It has 10mins of Ultra Fast Charging that gives 20hours of Playback time with total playback upto 28 hours.