Miyota Caliber 2115 Watch Movement

Manufacturer	Miyota (Citizen)
Caliber Number	2115
Type	Quartz
Similar Caliber	2105
Lignes	10.50”’
Diameter	23.7mm
Height	4.15mm thick
Jewels	0
Battery Cell Number	377 (SR626SW)
Frequency	32,768Hz
Quartz Type	Tuning fork type quartz crystal
Stem	065-299 (tap 10)
Hand Sizes	1.20mm / .70mm / .17mm
Functions	Central hours; central minutes; central seconds; date at 3:00
Hacking Seconds?	Yes
Country of Manufacture	Japan
Known Models	TW Steel

The Miyota caliber 2115 is a 0 jewel quartz movement. There is also a caliber 2105 which adds a day of the week complication.

Some of the topics covered in this caliber listing:

2115 Accuracy:

Miyota states the accuracy of this movement to average about +/-20 seconds/month.

Battery Cell:

The caliber 2115/2105 takes an SR626SW watch battery. The battery is said to last up to 3 years. There is a battery saving (aka hacking) mode by pulling out the stem into time setting mode (position II).