Smart Bike Tail Light with Bicycle Seat Bag

Motion & Light Sensing: Equipped with motion & light sensors which detects movement, vibrations and ambient light levels.While riding, the bicycle tail light automatically turns off in bright daylight and activates when ambient light is dim. 4 Lighting Modes: The bike cycling light has 4 different light modes: Normal Flash, Breathing Flash, Fast Flash, and Steady On.Customize light mode to adapt to varying light conditions and road environments. USB-C Rechargeable Bike Taillight: Built-in a 300mAh lithium battery, no more hassle of changing batteries.The rear bike light lasts for 10-36 hours when fully charged. Large Capacity & Expandable Space: With dimensions of L 8.66" X W 3.54" X H 3.93", the cycling wedge pack offers ample storage space while maintaining a sleek profile.The capacity can be expanded from 1.6 L to 2.0L. Easy to Install: Quick-release bracket & velcro strap design ensures quick and easy tool-free mounting and removal. The velcro strap help fix bicycle pouch and prevent it from shaking.