Product name:bike lights Product size about : 8*7*1.8cm/3.14*2.75*0.70in Battery capacity: 300mAh Charging method: type-c Charging time: 20 minutes Product color: As shown in the figure Product material:ABS product features: 1. innovative design: our bike tail light features a unique streaming light pattern designed by creative designers to improve cyclists' visibility and safety on the road. 2. LONG BATTERY LIFE: The tail light is powered by a high-capacity rechargeable battery that lasts for 5-32 hours of continuous illumination, ensuring reliable and long-lasting performance for cyclists, especially bike leaders. 3. TYPE-C CHARGING: The tail light can be conveniently charged via TYPE-C, so you can easily it with a mobile power supply, laptop or any C -enabled device. Say goodbye to the hassle of replacing batteries. 4. LIGHT FLOWING EFFECT: The main focus of this product is the of light, our bike tail light will present you with a comfortable light flowing effect, letting others feel the uniqueness of your bike, which is very personalized. 5. IDEAL FOR BIKE LEADERS: Designed for bike leaders, this tail light is a must-have accessory for group rides or cycling events. It helps keep the group together and ensures that the leader is easily recognizable, thus improving overall safety and coordination. Precautions: 1. As we know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can feel to contact mewe will give you some suggestion, but it is for you reference only. Shipment includes: 1 pc bike lights