The OnePlus Bullets Wireless Z2 ANC has 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. It has 10mins of Ultra Fast Charging that gives 20hours The Bullets Wireless Z2 ANC Neckband Earphones are built to deliver powerful audio, enhanced comfort, and dependable performance for everyday use. Equipped with a built-in microphone, these wireless neckband earphones ensure crystal-clear voice calls and hands-free communication. Finished in a stylish Booming Black color, the Bullets Wireless Z2 ANC offers up to 28 hours of battery life, making it ideal for music, calls, travel, and daily activities. Designed with Active Noise Cancellation (ANC), a lightweight build, and a sweatproof design, these earphones provide an immersive listening experience while remaining comfortable during workouts and extended use. Measuring 41.3 10.7 2.3 cm and weighing just 0.028 kg, the neckband is ergonomically designed for a secure and comfortable fit throughout the day. The package includes a Type-C charging cable and three pairs of ear tips (S, M, and L) to ensure a customized fit for every user. Backed by a 1-year warranty and Made in China, the Bullets Wireless Z2 ANC combines premium sound, effective noise cancellation, lightweight comfort, and long-lasting performance in a sleek and durable wireless neckband design.