Ronda Caliber 6004.B

Manufacturer	Ronda
Caliber Number	6004.B
Movement Type	Quartz, battery-powered
Lignes	11.5”’
Diameter	26mm
Casing Diameter	25.6mm
Height	3.3mm
Jewels	5 (gold plated / 1 jewels (nickel plated)
Frequency	32,768 Hz
Battery Cell Number	373 (SR916SW)
Claimed Battery Life	40 months
Battery EOL?	Yes (Swiss made version)
Hand Count	3
Hand Sizes	1.2mm / .70mm / .20mm
Functions	Central hours; central minutes; small seconds at 6:00, big date at 12:00 or 6:00
Hacking Seconds?	Yes
Quickset Date?	Yes
Country	Swiss made or Swiss parts (assembled in unknown)
Known Models	Tag Heuer Formula 1 Grande Date (Please add your watch to the comments below…)

Ronda caliber 6004.B is a quartz movement with a small seconds subdial and a big double-digit date complication.

The 6004.B is part of the xtratech family of calibers and Ronda considers it to be a repairable metal watch movement.

Swiss Made VS Swiss Parts:

According to the Ronda website, there are two versions of this movement: a Swiss parts version with 1 jewel and nickel plated finish; and a 5 jewel version with gold plated finish.

The Swiss made version is listed as being equipped with a low battery indicator (EOL), but the Swiss parts does not.

Battery Information:

When the battery is low on the Swiss made version, the seconds hand will skip a few seconds (this is the EOL mentioned above).

The replacement battery is a number 373 (aka SR916SW).

Tip: Pulling the crown out will “hack” the movement and also serves as a power saving function while the watch is in storage. Ronda states that this will reduce the power consumption by about 70%.

Additional Resources:

• Datasheet and drawings (pdf)