Ball Watch Caliber RR1105-C

The Ball caliber RR1105 is an automatic watch movement with a small seconds subdial at 6:00 (Ball refers to this as “subsidary seconds”. The RR1105 is basically an ETA 2895-2 with Ball branding on the rotor.

Ball doesn’t say much about the RR1105-C on their official site. Apart from the listing on their movements page, the following sentence is all that was found:

“The sapphire exhibition case back allows for a glimpse into the intricate workings of the BALL RR1105-C chronometer caliber.” –Source (also the source of the stock image above)

RR1105 VS RR1105C:

There is another version of the RR1105 known as the RR1105-C. The difference is that the “C” version is a chronometer rated movement, certified by COSC.

Examples of watches with this movement:

The RR1105-C is found in the Ball Trainmaster Standard Time and Trainmaster Railroad Standard 130 Years models. If you know more Ball watches using the RR1105, please add them in the comments below…

Additional Resources:

• Ball Watch official movements page
• More Ball watch mentions