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Open balance wheel at nine o'clock, Roman numerals, exhibition back.
| Movement | Automatic |
|---|---|
| Calibre | Seiko NH38A |
| Power reserve | 41 hours |
| Frequency | 21.600 vph |
| Jewels | 24 |
| Accuracy | -20 / +40 s per day |
| Case material | Polished stainless steel |
| Case diameter | 41 mm |
| Case thickness | 12.2 mm |
| Lug to lug | 48 mm |
| Lug width | 20 mm |
| Crystal | Sapphire, box-domed |
| Water resistance | 50 m |
| Dial | Silver-white, open balance at 9 |
| Lume | None |
| Weight | 96 g (on bracelet) |
| Reference | VD-OH-ROM |
The NH38 is the open-heart version of the NH35 - the dial is cut away over the balance wheel so you can watch it oscillate at three beats a second.
Roman numerals, a box-domed crystal, and an exhibition caseback with a decorated rotor. Nothing here is hidden.
2-year warranty on the movement, including one regulation within that period. What it covers.
Service interval for automatics is five to seven years; quartz needs a battery every three to five. We do both in house.
30-day returns on unworn watches with the box and the protective stickers in place.
Automatic, 41 hours of reserve, 21.600 vibrations per hour.