Save yourself the time and trouble of manually reeling in the tether of your CHASING M2 or Gladius Mini underwater ROV with the E-Reel rechargeable electronic winder. This device can store and retract up to 656' (200m) of tether with three retrieve speeds, for retrieval times of 3.6 to 9 minutes. It's IP65-rated water resistant so you can use it confidently in splash-prone environments like the shore or the deck of a boat. A full charge of the E-Reel's 4800mAh battery provides enough power for 30 retrieves, with a battery lifespan of 300 charge cycles.