Yes, Beoplay EX are dustproof and waterproof (IP57 rating). We recommend that you store the charging case in a dry place and do not submerge Beoplay EX in water and make sure to wipe the earphones dry before placing them in the charging case.
Also, please note that if ANC or Transparency is turned on, the earphones’ microphone is more sensitive to wind. Therefore, it is a good idea to set your earphones to a neutral setting when used in windy conditions.