They say about 12 years. The light is self-sustaining. Remember though, all you’re getting here is the fob. You have to add the tritium vials yourself which could cost upwards of another $50 depending on how many you want to install.
Jun 19, 2018
A community member
Jun 19, 2018
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glennacit what puts me off, they say it is difficult to get vials in US