Shimano BT-DN300 Built-In Type Di2 Battery [SD300 Type] Brand_Canyon Heart Rate Monitor: HR40/HR60

Heart Rate Monitor: HR40/HR60

MIPS® Spherical: Built into the helmet between two different layers of foam

Shimano Deore M4100 brake set consisting of the BL-M4100 2-finger brake lever and the BR-MT410 2-piston caliper

--Verified Non-GMO

Shimano BT-DN300 Built-In Type Di2 Battery [SD300 Type] Brand_Canyon Heart Rate Monitor: HR40/HR60SHIMANO Built In Type Di2 Battery [SD300 Type] BT DN300 The new DN300 battery features the same waterproof design that Di2 users have loved for generations. Now with 3 ports, it delivers stable power to Shimano's 12 speed road derailleurs and shifters (if a fully wired option is selected). With the same size as its predecessor, the slim DN300 battery can be housed inside seat posts or frames ensuring a clean aesthetic. Now with 3 ports, the DN300