Built-in professional-grade speakers: Adopting design of built-in speakers, professional-grade sound simulation technology and chips, the sound function can be intelligently turned on or off by triggering handbrake 3 times in a row. Intelligent voice broadcast: After it is turned on, it can realistically the iconic "puff" sound when truck is running out of air, highly restore real scene, further enhance driving immersion experience, and make players feel as if they are in cockpit of a real truck. Plug and play, no driver required. Players only need to connect air brake to computer through USB interface, and system can automatically recognize it, which improves convenience of use. The USB and handbrake can be plugged and unplugged at . The flush design of USB and interface protects integrity of interface and is more beautiful. Restore force and travel of real truck air brake operation: When player pulls brake lever, the internal precision sensor quickly captures Capture action and accurately transmit data to , so as to the real air brake control in real time in , creating an immersive driving experience for players. Adapt to multi-scenario installation: the base hole supports most brackets. The base of our product has reserved a 40MM hole distance for gears and a 34MM hole distance for handbrakes. If you have a steering wheel bracket and bracket has a gear mounting position or a handbrake mounting position, you can install it directly (hole diameter: 6mm). Color: Black Material: plastic+metal Package Contents: 1 * Handbrake 1 * data cable 1 * wrench 4 * screws Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.