Rebuff Reality TrackStrap Plus - VIVE Tracker 3.0 / VIVE Tracker (Sold Separately) Full Body Tracking - 10+ hrs 6,000mAh Battery - Adjustable Comfortable Foot Straps and Waist Belt - Popular in VRChat - Motion Capture : Video Games - Amazon.com
Power Bank - 9750mAh - 21 Watt | For VIVE headsets | Knoxlabs