Ravemen's bike turn signals functions like car signals, providing clear indications for turns and lane changes. When you're riding, the warning lanes and brake alerts protect your safety. When parked outside, the anti-theft alarm and 120dB horn safeguard your bike. With the remote control, you can easily manage all functions. Enjoy peace of mind with the NT101 on your commute! Bike Turn Signals: Easily press the remote button before turning, the turn signal lights will flash with a click sound, making your turning intentions clearly visible (the sound can be muted)Ground Warning Lanes: Unique ground warning lanes alert any incoming vehicles, providing riders with their virtual lanes to further increase visibilityAnti-Theft Vibration Alarm: This anti-theft bicycle alarm can effectively deter thieves and provide extra security when parking outdoorsBike Horn: Equipped with a 120dB horn function that emits a loud sound, it can notify cars, pedestrians and other drivers of your presenceWire