Citizen Tsuyosa Automatic (Green Dial) vs Frederique Constant Slimline Moonphase Manufacture

Citizen's design language vs Frederique Constant's approach

The Citizen Tsuyosa Automatic (Green Dial) features a Stainless Steel case at 40mm with Sapphire Crystal with Cyclops protection. The Frederique Constant Slimline Moonphase Manufacture offers Stainless Steel construction at 42mm with Convex Sapphire. Both represent their brand's distinct design philosophy and heritage.

Automatic Caliber 8210 vs Automatic FC-705 (In-House)

The Tsuyosa Automatic (Green Dial) runs the Automatic Caliber 8210 (Citizen/Miyota In-House Automatic, 40 Hours power reserve) at 21,600 vph (3 Hz) frequency. The Slimline Moonphase Manufacture uses the Automatic FC-705 (In-House) (In-House Automatic Manufacture, 42 Hours reserve) at 28,800 vph (4 Hz). The Slimline Moonphase Manufacture offers a longer power reserve.

40mm vs 42mm — different wrist presence

At 40mm, the Tsuyosa Automatic (Green Dial) wears more compactly on smaller wrists compared to the Slimline Moonphase Manufacture at 42mm. Water resistance differs: 50m (5 ATM) vs 30m (3 ATM).

Citizen sits in the lower tier

The Citizen Tsuyosa Automatic (Green Dial) sits at $250–$500 and the Frederique Constant Slimline Moonphase Manufacture at $2,500–$5,000. On the specs that outlast any price: the Tsuyosa Automatic (Green Dial) uses Sapphire Crystal with Cyclops with 40 Hours, against Convex Sapphire and 42 Hours on the Slimline Moonphase Manufacture. Service intervals are typically 5-7 years for both.

50m (5 ATM) vs 30m (3 ATM)

The Tsuyosa Automatic (Green Dial) is rated to 50m (5 ATM) while the Slimline Moonphase Manufacture handles 30m (3 ATM). The Tsuyosa Automatic (Green Dial) is better suited for water activities.