The SF series was developed to offer drivers exactly the functions they need for their comfortable journey. The SF series allows a Bluetooth connection to a smartphone, MP3 player or a navigation device, while both the SF2 and the SF4 also have an intercom function. All SF models offer the latest functions such as audiomultitasking ™, quick charging function and the mutation of the microphone. The SF series particularly captivates with its narrow and functional design, which fits almost every helmet. Batteries must not be disposed of by household waste. They are legally obliged to return old batteries so that professional disposal can be guaranteed. You can hand over old batteries at a municipal collection point or on site. We are also obliged to withdraw old batteries as distributors of b.
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