Miyota 6T27
Factory specs
- Caliber
- 6T27
- Made in
- Japan
- Frequency
- 28,800 bph (4 Hz)
- Power reserve
- 40 h
- Jewels
- 21
- Hacking
- No
- Hand winding
- Yes
- Accuracy
- -20 / +40 s/day
- Diameter
- 19.8 mm
- Height
- 5.23 mm
- Functions
- Hours, Minutes, Seconds
Small (ladies' size) three-hand automatic without date. Per Caliber Corner's spec table: 8¾ lignes, Ø19.8mm, 5.23mm high, 21 jewels, 28,800 vph, 40h power reserve, accuracy -20 to +40 s/day, lift angle 50°, Parashock, unidirectional (clockwise) rotor winding, hand-windable, unadjusted. Caliber Corner first listed it as hacking, then corrected it to non-hacking after an owner of a Brew Metric Lite reported it doesn't hack. The 6T28 is the same caliber with an open-balance cutout on the dial side. Miyota's own product page (miyotamovement.com/product/6t27) returned HTTP 503 on 2026-10-24, so these figures come from Caliber Corner; check them against Miyota's spec sheet when the site is back. Tier: entry, as its accuracy spec and lack of hacking match the Miyota 82xx rather than the 90xx, despite the 4 Hz beat.
Watches with the Miyota 6T27
| Watch | Price from | Movement | Dia. mm | Thick mm | Crystal | Micro-adjust |
|---|---|---|---|---|---|---|
 Brew Metric Lite |
$375 | Miyota 6T27 | 30 | 10.55 | Sapphire | — |
 Kiwame Tokyo Yane |
$626 | Miyota 6T27 | 26.5 | 9.7 | Sapphire | no bracelet |