Magene L308 Expression Tail Light-Seatpost Mount Size:Standard Tire Compatibility - Compatible with

Tire Compatibility - Compatible with tires up to 34mm (Disc Brake Version)

Compatible Bottom Bracket: BSA

Not compatible with most indoor spin bikes or ANT+ devices

BB Shell Width : 89

Country of origin CHINA

Magene L308 Expression Tail Light-Seatpost Mount Size:Standard Tire Compatibility - Compatible withSpecifications: Lightweight Design: The intelligent tail light weighs only 23g, allowing you to ride with ease. Type C Charging Port: Easy and fast charging, charges to 80% in 1. 5 hours. IPX6 Waterproof: No worry to ride on rainy days. Emoji Memory: Auto display the last emoji when the next time you turn on. Installation method: Seatpost Weight: 23g