BERNY AM050M Automatic Watch — Miyota 9110, 43mm, Power Reserve, Day/Date/24H, Octagonal Case

BERNY AM050M Automatic Watch — Miyota 9110, 43mm, Power Reserve, Day/Date/24H, Octagonal Case

The BERNY AM050M is a 43mm Miyota 9110 automatic multi-complication dress watch — power reserve indicator at 12 o’clock, day sub-dial at 9, date window at 3, 24-hour sub-dial at 6, octagonal-rounded case profile, guilloché-textured dial with Roman numeral markers, heat-blued hands, sapphire crystal, 316L stainless steel case at 13.5mm, exhibition caseback, genuine leather strap or steel bracelet, 5ATM water resistance, 99g. Five variants across black and silver/white dials with silver and gold-tone cases.

Key Specifications

Variants — Five Configurations

AM050M (leather strap):

• AM050M-A: Black dial / silver case / black leather strap
• AM050M-B: White/silver dial / silver case / black leather strap
• AM050M-Y: White/silver dial / gold-tone case / brown leather strap

AM050MS (steel bracelet):

• AM050MS-A: Black dial / silver case / steel bracelet
• AM050MS-B: White/silver dial / silver case / steel bracelet

Miyota 9110 — The Premium Multi-Function Caliber

The 9110 is Miyota’s premium automatic caliber from the 9100 family — 26 jewels, 28,800 vph (4Hz), 5.52mm height, hacking seconds, hand-winding, −10/+30 accuracy. It sits above the 9015 and 9122 in Miyota’s hierarchy:

The 9110 adds a power reserve indicator — a complication found on significantly more expensive watches — alongside the full calendar set. At 4Hz it produces the same smooth sweep as the 9015 and 9122.

Four Simultaneous Complications

The 9110 specifically provides: hours, minutes, central sweep seconds, 24-hour sub-dial at 6 o’clock, day of the week sub-dial at 9 o’clock, date window at 3 o’clock, and power reserve indicator at 12 o’clock.

Power reserve at 12 (arc display): Shows the remaining mainspring energy as a sweeping arc from approximately 0–40 hours. When the arc reaches zero the watch will stop unless wound or wrist-worn. This is the AM050M’s most distinctive complication — power reserve indicators are rarely found at this price point.

Day sub-dial at 9: Current day of the week.

Date window at 3: Current date (1–31).

24-hour sub-dial at 6: Current hour in 24-hour format.

Octagonal Case with Guilloché Dial

The rounded octagonal case cuts the corners of a square profile — eight sides rather than four — creating a distinctive silhouette between round and cushion case shapes. The polished bevelled edges of the octagon catch light on each facet, creating more visual complexity than a plain round case.

The guilloché-textured dial uses an engine-turned pattern creating directional light scatter across the dial surface — contrasting with the applied Roman numerals and the functional sub-dial architecture. The heat-blued hands provide a specific colour character — steel hands treated to produce a blue-violet oxidation finish — appropriate for the formal Roman numeral dial.

9110 Accuracy — −10/+30 Seconds/Day

The Miyota 9110 is rated at −10 to +30 seconds per day accuracy. The −10/+30 range reflects the wider tolerance of the complication-heavy caliber — driving four simultaneous complications alongside the time display creates more energy demand variation than a simple date-only movement. Most 9110 units run within ±15–20 seconds/day in practice. Manual weekly correction is the recommended maintenance approach.

AM050M vs AM042M — Two BERNY Multi-Function Automatics

Both are BERNY open-heart or multi-function dress automatics in the range:

Choose AM050M for Miyota Japanese movement, solid sapphire, power reserve indicator and the octagonal case. Choose AM042M for the open-heart balance wheel display, big date aperture, smaller 40mm case and lower price.

Who Is the BERNY AM050M For?

The AM050M is built for:

• Power reserve indicator buyers — the 9110’s power reserve display is the AM050M’s primary differentiator and is rare at this price
• Miyota 9110 buyers specifically — the premium top-tier Miyota multi-function caliber
• Gold-tone case buyers — AM050M-Y with gold case and brown leather is the warmest and most traditionally formal configuration
• Octagonal case buyers who want the faceted case silhouette on a multi-complication dress automatic

How It Compares

vs. BERNY AM042M Shanghai 2L55 — See comparison table above.

vs. LOBINNI 16003 Seagull ST16K3-3A — LOBINNI uses Seagull ST16K3-3A with moonphase + world time + week + date + 24H at 41.5mm. BERNY uses Miyota 9110 with power reserve + day + date + 24H at 43mm. Both are multi-complication dress automatics with five simultaneous functions — different complication sets (moonphase/world time vs power reserve).

vs. Seagull 816.423 Moonphase — Seagull uses ST21 with moonphase + power reserve + pointer date at 40.5mm. BERNY uses Miyota 9110 with power reserve + day + date + 24H at 43mm. Both include power reserve indicators — different additional complications.

More from Jewelry Addicts

• BERNY AM042M Shanghai 2L55 — open-heart Chinese automatic alternative
• LOBINNI 16003 Seagull ST16K3-3A — Seagull moonphase + world time alternative
• Seagull 816.423 Moonphase — Seagull power reserve alternative
• BERNY Watches — full BERNY range
• Best Automatic Watches Under $500 — full roundup