Clear sound for calls and music: delivers call audio even in noisy environments, and provides clear sound for music during exercise or work. Noise reduction: advanced environmental noise reduction technology on the microphone blocks most background noise, clearly captures your voice, and provides reliable call quality for home or office use. Long battery life: up to 10 hours of continuous use; volume control and simple call management for easy answering or ending of calls; suitable for daily conversations, chats, music and games. Adjustable and comfortable fit: over ear padded headband is adjustable and stretchable to fit different head sizes; comfortable for adults and children; breathable design suitable for activities such as running, walking, and cycling. Universal compatibility: Bluetooth 5.1; compatible with cell phones, tablets, computers and other Bluetooth devices; supports wired connection and TF Card.