Shimano steps sw e7000 l switch leftdeveloped for controlling di2 shifting on shimano steps e bike drive systems, this switch offers easy and simple operation. This e bike specific left hand switch unit features two large and definitive buttons for shifting to a higher or lower gear. The small third button changes the steps cycle computer display or switches the system between automatic and manual shift modes.features use e bike series shimano steps e7000 series compatibility compatible with shimano steps components easy, simple operation power mode change sw e7000 l walk assist mode sw e7000 l motor assist available to push bike single or pair single weight 23.9gtechnologies e tube the e tube platform's “plug play” and d fly wireless connections make it easier than ever to check the system's status, and apply customized settings to di2 and shimano steps components with a pc, tablet or smart phone. 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. Beautiful visualization of your real time shimano steps riding data on your smartphone. Advanced all weather design resists rusting, stretching, and freezing.a 2 year warranty is offered with all shimano products from chain reaction cycles 3 years on dura ace and xtr products.buy shimano components from chain reaction cycles, the world's largest online bike store.