Shimano wireless 12-speed shifter, part of the outstanding Deore Di2 spec level range.

SPECIFICATION - 

• Precise and tactile fast wireless shifting, just a light touch, as soft as a mouse click, is sufficient for the rear derailleur to instantaneously select the correct gear
• Shifting can now happen as quickly and effortlessly as possible thanks to ergonomic short stroke paddles
• With 2 way adjustments, the switch lever can be adjusted for operation preference
• Hold multi shift function
• Shifter is completely customizable, using E-tube software you can programme the shifting to your preference
• 3rd button for multi function, trim adjust, auto shift mode change, D-fly input etc
• clamp band type mount
• Coin cell battery