Bosch Purion 400 Retrofit Kit 31.8mm (BHU3500) - The smart system

Purion 400 lets you focus fully on what lies ahead. A quick glance at the handlebars is all it takes to get the most important information about your journey - thanks to the clear design and high resolution display in all light and weather conditions. Perfect for fast descents.Purion 400 display retrofit kit with mounting hardware and bracket. 1.6 inch and 320 x 160 pixels for good readabilityIntegrated buzzer for acoustic alerts in the event of system messagesOrder cable separately