Transmitter (controller) for Heng Long 1/16 RC tank (RX-18 system, smoke/sound version) (Antenna is included; crystal is not included).
This item was carefully tested and all functions were found perfect.
Note: the controller battery cell is tight for batteries. You might need to remove all the partitions in the middle of the battery cell by yourself which is easy to most players. Please do not order this item if you are unhappy with this.