5mm

Vintage sidewinder Swiss-made Belforte watch w/ new strap. Runs and keeps good time. Date function works, but first digit is worn. Crown has a little bit of play but winds and sets as it should. As with any vintage mechanical watch with unknown service history, a service by a watchmaker (clean, oil, adjust) is always recommended. Study pictures thoroughly and ask any questions you may have. The watch is being sold as-is with no warranty expressed or implied.