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. Turn on the Motion Tracker and open the Motion Tracker app on your headset. Click Pair to auto-pair or Calibrate to recalibrate, and simply follow the guide. The calibration process takes around 5 seconds. Each Motion Tracker, including the socket, has 12 infrared sensors. The tracker alone carries one 9-axis IMU sensor. While tracking, sensors will track and transmit motion data at a frequency of 200Hz. In Full-Body Tracking Mode, the 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%. Full-body motion tracking data can be shared with SteamVR to stream and play motion-sensing games. Chemical: None Support wireless connection: Yes Model Number: Motion Tracker 2.0 Compatible: For PICO VR Condition: New The actual product may have slight color or size difference, which will not affect the use. Colour: As Shown Material: Plastic Package Contents: 2 x Motion Tracker 1 x Instructions in Chinese and English Only the above package content, other products are not included.