【ULTRA BRIGHT SMART BRAKE SENSOR】Intergrated with 20 high lumen light beads, the LED bike taillight makes you more visible in riding and enhance your safety. Perfect bike light for both daytime and night riding.

【6 LIGHT MODES & AUTO ON OFF】The smart bike tail light has 6 light modes to meet different needs, including steady mode, breathing flash, slow flash, quick flash, rhythm flash and Eco flash. Easy press the button to shift the modes. This smart bicycle tailight including motion sensor and light sensor, it will be automaticlly on when detect low brightness, braking or moving. It will be auto off when you ride under the sunlight or no motion in 45 secs.

【2 WAYS EASY INSTALLATION】Easy Mount and Removable.The smarke bike tail light can be easily installed under the saddle or on the seatpost. Saddle mounting bracket and adjustable silicone strap provided, make the bicycle rear light flexible to quick install or detatch on bicycles.

【RECHARGEABLE & LONG WORKING HOURS】With built-in safe and durable rechargeable ithium battery, the rear bike light working time can be up to 40 hours when fully charged.

【ALUMINUM ALLOY SHELL & IPX6 WATERPROOF】Adopts aluminum alloy shell, this bike tail light has a nice touch and awesome appearance. IPX6 waterproof grade makes it flexible to use the bicycle tail light in any weather.

【PACKAGE INCLUDED】1*Bike Tail Light, 1*USB Charging Cable, 1*Saddle Rail Bracket, 1* Seatpost Bandage, 1* User Manual

【ULTRA BRIGHT SMART BRAKE SENSOR】Intergrated with 20 high lumen light beads, the LED bike taillight makes you more visible in riding and enhance your safety. Perfect bike light for both daytime and night riding. 【6 LIGHT MODES & AUTO ON OFF】The smart bike tail light has 6 light modes to meet different needs, including steady mode, breathing flash, slow flash, quick flash, rhythm flash and Eco flash. Easy press the button to shift the modes. This smart bicycle tailight including motion sensor and light sensor, it will be automaticlly on when detect low brightness, braking or moving. It will be auto off when you ride under the sunlight or no motion in 45 secs.【2 WAYS EASY INSTALLATION】Easy Mount and Removable.The smarke bike tail light can be easily installed under the saddle or on the seatpost. Saddle mounting bracket and adjustable silicone strap provided, make the bicycle rear light flexible to quick install or detatch on bicycles.【RECHARGEABLE & LONG WORKING HOURS】With built-in safe and durable rechargeable ithium battery, the rear bike light working time can be up to 40 hours when fully charged.【ALUMINUM ALLOY SHELL & IPX6 WATERPROOF】Adopts aluminum alloy shell, this bike tail light has a nice touch and awesome appearance. IPX6 waterproof grade makes it flexible to use the bicycle tail light in any weather.【PACKAGE INCLUDED】1*Bike Tail Light, 1*USB Charging Cable, 1*Saddle Rail Bracket, 1* Seatpost Bandage, 1* User Manual