1. Timeliness.
Question:
What timeliness can I expect?
Answer:
Factory setting is always below 1 second of deviation per day. Likely actual timliness after delivery (under normal use) is +/- 5 seconds per day or better if new or recently serviced (Guranteed performance is +/- 30 seconds per day).
In depth answer:
Before delivery from our factory, all watches are tested by vertical bi-directional rotation in a watch winder at even temperate and humidity for at least 3 days. If the watch displays a deviation of more than 1 second per day, the movement (balance spring tension) is adjusted and retested for another 3 days. This is then repeated until the watch displays a deviation of less than 1 second per day. Most watches delivered display a variation of less than 0,5 seconds per day and in some extreme cases, watches have kept perfect time for 3-4 weeks (less than 1 second for the entire period).
Timeliness after delivery depends primarily on user movement pattern and state of service. Among the 20 first sold watches we are happy to note that the highest daily (24 hours) variation was +/-10 seconds for one single watch, which was later adjusted to suit the wearers unique use/movement pattern and end up +/- 2 seconds per day. ALL other model "R" watches delivered and reported (of the 20 first sold) have displayed a timeliness of +/- 5 seconds per day or lower, almost all of them lower than +/- 3 seconds per day. This is an extremely high level of precision for a mechanical watch, corresponding to the highest official standard (C.O.S.C.) available, typically displayed by the finest mechanical movements. Bissmarck do not guarantee this level of timeliness but merely state facts of the model "R" watches delivered and reported so far.
2. Luminous.
Question:
How strong is the luminous (night) effect?
Answer:
Fully charged luminous will make time reading possible in an average dark bedroom after 6-9 hours.
In depth answer:
The luminous effect depends primarily on quality of the luminous substance, the mass (volume/area) and the charge of light into the luminous. In model "R" we use "Superluminova" luminous, top quality of non-radioactive luminous. The design of the hands in model "R" is medium to thin, resulting in a smaller mass of luminous than e.g. a typical divers watch, where the luminous function is crucial. In the design of model "R", appearance has been valued higher in relation to luminous function than in e.g. a divers watch, therefore the luminous effect is also more limited. In e.g. Nordic countries in wintertime, the watch is typically covered by long sleeves (protection from cold) most of the day. Placing the watch under a 40-60 W light source for 15-30 seconds prior to going to bed will enable time reading after 6-9 hours.
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