Rockbros Wireless Electronic Derailleur System For 7-13 Speed Bikes - 75mm

Wireless connectivity: seamless connection supporting 7-13 speed gear freewheels. Durable build: made of lightweight aluminum alloy for long-lasting performance. Magnetic charging: fast charging with 800mah capacity in just 2 hours. Multiple cage versions: available in long, short, and super short cage versions. Easy app pairing: convenient mobile app for pairing and battery status updates.

Wireless connectivity: seamless connection supporting 7-13 speed gear freewheels. Durable build: made of lightweight aluminum alloy for long-lasting performance. Magnetic charging: fast charging with 800mah