A portable communication device is provided that receives upgrade files via at least one wireless coupling. One single-outcome game and at least two differing paytables for said game are offered to the player. The second housing is provided with a main stop valve of an electromagnetically opening and closing valve. The foam may be applied to the inner surface of the chassis of the device, or it may be applied on or near a high speed integrated circuit chip, or both. The balancing plate includes a fluid passage having a check valve and fluid passes through the fluid passage for pressuring the cavity.