Shimano XTR M9050 Di2 Shifter

SEIS (SHIMANO ELECTRONIC INTELLIGENT SYSTEM)

FIREBOLT:
--Quicker shifting operation instinctively even at any terrain with less effort.
--Ergonomic rotary switch match natural hand movement.
--Independent lever position adjustment.
--Faster and more accurate shifting.
--Short-stroke, vivid index feeling.

E-TUBE System:
--Wirelessly customize functions like SHIMANO SYNCHRONIZED SHIFT over Bluetooth while out on a ride.
--Automatically checks for firmware updates on each startup to ensure all components are running the latest version.
--PC, smartphone and tablet applications can help you quickly diagnose errors and simplify the repair process.
--Visualization of your real-time SHIMANO STEPS riding data on your smartphone.
--Advanced all-weather design resists rusting, stretching, and freezing.