Specification: 

• 100% Brand new!
• High-fidelity stereo sound quality.
• Built-in high-sensitivity microphone and noise canceling technology, ensure high-quality crystal sound.
• Advanced Bluetooth-compatible 5.2 The upgraded BT V5.2 chip provides a fast, stable, and low-power connection.
• These headsets are compatible with most smartphones, iPhones, Android devices, and other Bluetooth-enabled devices.!
• Outstanding battery performance.
• Battery Capacity: 90 mAh
• Built-in large capacity battery, which provides up to 6 hours of continuous music time and 8-12 hours ultra long standby with a single charge.!