AKZ MAX10 Head-mounted RGB Wireless Bluetooth Music Headset With Microphone, Supports TF Card Features: 1. The simple lines are integrated into the texture and color matching, and the fashion is armed to the ears. 2. Fast and stable transmission, no jams in music and video, clear calls and low latency, enjoy the audio and video synchronization experience. 3. The large-capacity battery can listen to the full 180h standby time, and you are not afraid of power failure when traveling outdoors 4. The soft big earmuffs can protect the ears gently while shielding the ambient noise 5. Whether it is driving, running or daily life, the Siri function with a sense of science and technology, one-click smart life anytime, anywhere Parameters: 1. Bluetooth version: V5.0 2. Transmission distance: 10 meters 3. Sensitivity: -90db 4. Microphone: -42db±1 5. Music playing time: 8-12 hours 6. Turn off the lights: 18-20 hours 7. Standby time: 180 hours 8. Battery capacity: 400mAh 9. Charging time: 2.5 hours Package list ： Headset x 1 Charging cable x 1