Ball Watch Caliber RR1105-C Watch Movement

Brand	Ball Watch Co.
Caliber Number	RR1105, RR1105-C
In-House?	No
Base Caliber	ETA 2895-2
Movement Type	Automatic, self-winding mechanical
Lignes	11.5”’
Diameter	25.6mm
Height	4.35mm
Jewel Count	27
Beat Rate / Frequency	28,800 bph / 4 Hz
Lift Angle	51 degrees
Power Reserve	42 hours
Hand-Windable?	Yes
Anti-Shock Device	Incabloc
Hand Count	3
Functions	Central hours; central minutes; small seconds at 6:00; date at 3:00
Hacking Seconds?	Yes
Country of Manufacture	Switzerland, Swiss made
Known Models	Ball Trainmaster Standard Time (Ref: NM3888D-PG-LCJ-WH, NM3888D-S1CJ-WH, NM3888D-S4CJ-WH, NM3888D-L4CJ-WH) (Add your watch to the comments below…)

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…