・ Vixen Polarie Star Tracker ・ Timelapse Adapter There are some minor scratches and dirt from normal use. It runs on two AA batteries. Power has been confirmed (red for Northern Hemisphere, green for Southern Hemisphere mode, as shown in the photos). It was stored in a dehumidified storage unit at home. It will rotate for as long as the batteries last. Also, the USB-Mini B connector serves as an external power connection terminal, and using a large-capacity battery allows for longer rotation. The timelapse adapter is very convenient for timelapse photography. I've used it many times, and I've never experienced any looseness or play, making it a great piece of equipment.