Description: 【Remote Turn Signals】: This bicycle tail light features remote technology, allowing riders to easily signal left or right turns without manual operate. This greatly enhances convenience and safe during rides, ensuring other road users can instantly understand your riding intentions 【Type C Fast Charging Port】: Equipped with a versatile Type C charging port, this tail light offers quick and convenient charging 【Integrated High Brightness Warning Horn】: The built in horn emits clear warning sounds in nighttime or complex environments, effectively alerting nearby pedestrians and vehicles 【Directional Light Effects with Sound Alerts】: When signaling turns, the Taillight not only emits sound signals but also displays distinct lighting effects indicating the turn direction. This double systems greatly improves recognition and reaction time, providing comprehensive safe for riders 【Designed for Night Riding】: Utilizing high brightness LED lights, this Cycling Taillight ensures maximum visibility even in or completely dark conditions at night Specification: bead: led battery: 1200mah lithium battery voltage: 3.7V working time: 12h light: red light/yellow light Size Chart: light: 9.8cmx3.3cmx3cm/3.86inchx1.30inchx1.18inch remote: 5cmx4.2cm/1.97inchx1.65inch Package Includes: 1 Remote 1 Taillight 1 Mounting Base 1 Remote Fixed Strap 1 Charging Cable Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.