I often ride my bike, and I have owned adjacent to the 16:12 the previous (eg BC 1609 and 1209). Unfortunately, it happened to me again and again that after riding in the rain, the speedos are unusable (this applies to all devices!). The device appears to be not well sealed, because then nothing works. This is me now already repeatedly happened and for me a reason to stop using the tachometer. This is annoying, because actually I am otherwise have been very satisfied with the device: Long battery life, temperature display, clearly, everything ok. For frequent travelers who are traveling in bad weather / rain, the speedometer is therefore not recommended.