RoboMaster S1 Gel Beads. The gel bead, mainly containing sodium polyacrylate crosslinking copolymer, is safe and non-toxic. It is recommended to use the gel beads after soaking them in clean water for 3 to 4 hours at normal temperature.
ROBOT ROBOMASTER S1 GEL BEADS/V2 CP.RM.00000090.02 DJI€2103
