Motion Trackers can be used continuously for over 25 hours in compatible games. If used for one hour a day, and auto-sleep is activated when the headset is removed, it can last 3 weeks without charging. Each Motion Tracker, including the socket, has 12 infrared sensors. The tracker alone carries one 9- IMU sensor. While tracking, sensors track and transmit motion data at a frequency of 200Hz. hold the controllers and wear two ankle trackers that have been calibrated through the Motion Tracker app.Perfect for motion or recognizing movement in games. In Full-Body Tracking Mode, Motion Tracker has a latency of approximately 20 milliseconds for motion capture, an average position deviation of 5cm, and an average angular deviation of as low as 6. The accuracy for detecting and matching stepping actions is no less than 98%. Color:As Shown Material:Plastic Knitted Cloth Package Contents: 2 * body tracking devices 1 * charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.