The Miyota caliber 9130 is made in Japan and was first introduced in 2009. This movement is from the company’s premium line and is found in many new microbrands and established brand watch models. The movement has a 10-year, proven track-record and is widely regardedas a high quality, workhorse movement and alternative to ETA’s caliber 2824.
The Citizen Miyota 9130 movement is a robust and accurate premium automatic movement, is one of the strongest, most solid automatic movements on the market.
It is a 26 jewels movement beating at 28.800 bph. Jewels, typically synthetic rubis are used in watch movements, not to add to their value, but to reduce friction and wear on moving parts. Lower end watches may have only 7 to 15 jewels. The standard for quality watches is 17 jewels or more. Tipically, anything over 26 jewels for these types of automatic movements are just for decoration.
Most modern watches have some form of shock protection around the balance wheel, as that’s one of the most delicate parts of the movement. This key part is the one most likely to break upon impact, which until the 1930’s or so was a real problem. The basic idea is to house the jewel in a circumferential spring mount, so that it can flex and absorb the energy. Citizen Miyota has developed in 1956 a proprietary shock resistance technology called parashock used till this day in many of their movements as in the Miyota 9130
- Size 13 1/2’’’
- Height 5.52mm
- Accuracy -10～＋30 sec per day
- Posture Difference under 40 sec
- Running Time 40 hours
- Vibration Frequency 28800 per hour
- Jewels 26 pcs
- Function: Stop second device – Automatic and hand winding – Quick date setting;
- 3 Hands Date
- Power reserve Complication