Futaba FBB2 Dry Rx 4 AA Battery Case with J Connection FEATURES: Designed to be used with 4 AA alkaline batteries; Made of black plastic; Futaba J style connector; One year Warranty INCLUDES: One Black plastic 4-AA size dry-cell battery box with Futaba J connector This is the 4-Cell Dry receiver battery box with Futaba J connector; FEATURES: Designed to be used with 4 AA alkaline batteries; Made of black plastic; Futaba J style connector; One year Warranty