T100 vs T25

With both T25 and T100 Tritium illumination options available in our collection, we often get asked “what is the difference?” and “which is better?”.

The answers are relatively simple, there is a difference (keep reading) and neither is better – it’s completely subjective.

The T rating relates to the total radiation content within the watch.  Radiation content is measured in millicuries (mCi), therefore, all watches with a T25 mark contain up to 25mCi and similarly, watches with a T100 mark, contain no more than 100mCi, but do exceed 25mCi.

Each model within our collection features our signature Tritium tubes and we only use those supplied by the market leading Swiss manufacturer mb-microtec; who are widely recognised as the best manufacturer of Tritium tubes with an extensive range of colour and size options.

Whilst there are differences between the total mCi content in the T25 and T100 models, the idea of “which is better” is simply a choice of personal preference and taste; much like which beer is better - ale or lager?

During the design process we decide whether to create a T25 or T100 model based on the aesthetic styling and functional design. You will note that the combinations available varies between each series.