You can set 5 styles sound mode for your RC car to create a realistic racing environment. and it can install in most of the RC cars as it has a small size to fit in.

Features
Advances SGS (Sound Particle Synthesis Technology) and SFC (intelligent State-following compensation technology) are adopted.
10 engine sound and 5 alarms are supported.
Support brake sound and exhaust valve sound;And brake sound can be set to ON/Off freely.
Standby mode supported it standby with no radio operation in 60 seconds. Move the throttle to wake it up.
Low-voltage protection is supported, and battery types(2S-4S Lipo) are automatically detected when powered up.

Specification:
Item name: Model Sound Simulator
Input Voltage: 6.5-16.8 V (2S-4S Lipo)
Speaker Power: 5W
Speaker impedance: 4
Mono model size: 46 x 46 x 42 mm
Dualmodel size: 81 x 52 x 42mm

Package size:
Mono mode 73 x 71 x 58 mm
Dual model 105 x 75 x 56 mm
Mono model weight: 113 g
Dual model weight: 169 g

Note: There could be a few deviations due to manual measurement or slightly color difference as the result of the shooting scene. Thank you for your understanding.

Package Listing:
1 * RC Car Engine Sound Simulator
3 *Adapter Cables
1 * User Manual