TONA MOD - EMERALD

Green dials have a moment right now, but the Tona Mod Emerald is not chasing a trend — it is built to outlast one. This handcrafted Seiko Mod chronograph pairs a deep emerald dial with a sport-chronograph layout and a 904L steel bracelet, assembled by hand at MedoMods in Germany. The result is a wrist-presence that works equally well at a casual Friday desk or a weekend track day.

Movement & Chronograph Function

The Seiko VK63 meca-quartz hybrid movement powers the timing function. The pusher engagement is mechanical — you feel a crisp click and a genuine sweep of the chronograph hand — while quartz oscillation keeps the timekeeping accurate without a service schedule. This is the sweet spot for a daily-use chronograph: the feel of mechanical, the practicality of quartz.

Case, Crystal & Bezel

• 40 mm stainless steel case – a size that fits most wrists without dominating them; sits flat and comfortable all day

• Sapphire crystal with Super-LumiNova indices – hard glass that resists everyday scratches; indices glow reliably after brief light exposure

• Screw-down crown & 5 ATM water resistance – crown locks down tight; handles rain, hand-washing and splashes without concern

• Tachymeter bezel – engraved scale for timing speed over distance, a functional detail that also anchors the sport aesthetic

Bracelet

• 904L stainless steel bracelet – polished and brushed finish, adjustable 14.5–22 cm, 20 mm lug width; the same steel grade used in professional-grade Swiss timepieces

The Emerald Character

The emerald dial gives the sub-dials real depth — the contrast between the main field and the chronograph registers is sharp and easy to read. On a steel bracelet, the green-and-silver combination is versatile enough to pair with almost anything. If you want a Seiko Mod chronograph that stands out without trying too hard, the Emerald is the right call.

Hand-assembled in Germany by MedoMods. EU shipping, no customs fees. Questions about fit or dial finish? We are happy to help before you order.