SJCAM SJ4000 SJ5000 Dual batterij lader The Vantrue S1 Pro Dual The Vantrue S1 Pro Dual is attached to the windscreen with a handy self adhesive GPS holder with magnetic connection GPS tracking: real time and history Useful for charging one or two batteries of the SJCAM SJ4000 or SJ5000 simultaneously and off camera only suitable for SJCAM SJ4000 and SJ5000 batteries