Operation & Maintenance
SIZING YOUR BRACELET
If your watch comes with a bracelet, there are removable links in it, and the clasp has either a ratcheting expansion feature, or some micro-adjustment holes to provide a comfortable fit.
Removable Links with Solid Screw Bars
The removable links in our bracelets are held in place with solid screw-bars.
Be sure to use the correct size screw driver when removing the screw-bars, and don't force them. Using a screwdriver which is too small for the screw heads can strip them, making removal impossible, and requiring them to be drilled out. Stripped screw heads are not covered under warranty.
We recommend using a small bit of mild thread locker or clear nail polish on the screw-bar threads, to prevent the screw-bars from coming loose. Lost screw-bars and resultant damage to a watch are not covered under warranty.
If your clasp does not have an ratcheting expansion function, there will be additional end-link mounting holes on the sides of the clasp. These micro-adjustment holes enable smaller sizing adjustments than the removable links. The end-links can be moved to the other holes by compressing the ends of the spring-bars holding the end-links in place.
If All Else Fails
If you require assistance sizing your bracelet, most jewelers and any watchmaker can size a bracelet quickly and inexpensively.
- Seiko cal. series NH3x - Full power at 55 full rotations
- Miyota cal. series 90xx - Full power at 40 full rotations
- STP series STP1-xx - Full power at 25 full rotations
Mechanical movements are not typically as accurate as battery-powered quartz movements. Their accuracy can be affected by position, the power in the mainspring, and environmental conditions such as temperature.
Prior to shipping, all of our watches are adjusted to make sure they are running within the movement manufacturers' stated specs for accuracy. If you find your watch is not running accurately on delivery, please contact us.
The accuracy specs provided by the movement manufacturers are the average daily rates of the multiple positions in which they're tested, and when tested at full power:
STP1-11 - Average daily rate of +/- 15 seconds/day, tested at full power (25 complete crown rotations, or 50 half-turns), measured in 5 positions of dial up, dial down, crown up, crown down, and 6 up, with up to 15 seconds/day of variance between positions, and up to +/- 20 s/d difference due to isochronism (loss of accuracy at less than 1/2 of full power).
Miyota 9015 - Average daily rate of -10 to +30 seconds/day, tested between 10 and 60 minutes of full power (40 complete crown rotations, or 80 half-turns), measured in 4 positions of dial up, 6 up, crown up, and crown down, with up to 40 seconds/day of posture difference, and 20-40 seconds/day difference due to isochromism (loss of accuracy at less than 1/2 of full power).
- Seiko NH35 - Average of -25 to +35 seconds/day, tested between 10 and 60 minutes of full power (55 complete crown rotations, or 110 half-turns), measured in 3 positions of dial up, 6 up, and crown down, with up to 60 seconds/day of posture difference (12 up, 6 up, 9 up, 3 up), and 20-40 seconds/day difference due to isochromism (loss of accuracy at less than 1/2 of full power).
You may experience better or worse performance on the wrist, or over a 24 hour period, based on activity, ambient temperature, and power in the mainspring.
Your watch will become less accurate as it winds down, and may not run within spec at less than 1/2 of its full power reserve.
If a watch is dropped or suffered a hard impact, it may affect the balance, causing it to run fast or slow, and require adjustment by a watchmaker, which is not covered under warranty.
If you find your watch is running extremely fast, gaining minutes per day, its movement has most likely become magnetized. Magnetic fields are very common, and your watch can become magnetized easily due to proximity to computers, speakers, and mobile devices. Your watch may even have been magnetized during shipping.
Demagnetization is something which can be done quickly and inexpensively by any watchmaker, or using inexpensive degausser (demagnetization) machines available online, or by setting your watch on the anti-theft device pads located at many stores' checkouts. Demagnetization of your watch is not covered under warranty.