Description: The SG engine sound simulation system has third channel functions, which can whistle sound through the third channel signal of the remote control Through the design of the high-powered speakers, speakers and custom make sure small premise has the very good sound field Applicable to a variety of vehicles included drift crawler rally truck etc. The system contains a total of 10 engine & whistle sounds. In operation mode, the system will automatically jump to the next sound when it is pressed by "+" or "-" When the 2S and above lithium batteries are used, the volume increases from an early age to the loudspeaker, until the loudspeaker is distorted, and the one gear is lowered to ensure that the speaker is able to withstand the current power output to avoid the damage of the loudspeaker Specification: Power supply range: 2S-4S Maximum power: 20W*2 Loudspeaker specification: 4O/8W Size Chart: Size: approx. 7.4 x 4.4 x 2.6cm/2.91 x 1.73 x 1.02inch Package Includes: 1 Piece SG-SZ03 Engine Sound Simulator 1 Piece Manual
