Casio G-Shock DW-5600 Square vs Longines Master Collection Moonphase

Casio's design language vs Longines's approach

The Casio G-Shock DW-5600 Square features a Resin case at 42.8mm (Square) with Mineral Glass protection. The Longines Master Collection Moonphase offers Stainless Steel construction at 40mm with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.

Quartz Module 3229 vs Automatic Caliber L899

The G-Shock DW-5600 Square runs the Quartz Module 3229 (Casio Digital Quartz (Battery), 2-Year Battery power reserve) at standard frequency. The Master Collection Moonphase uses the Automatic Caliber L899 (Automatic (ETA A31.L91 base), 72 Hours reserve) at 25,200 vph (3.5 Hz). The Master Collection Moonphase offers a longer power reserve.

42.8mm (Square) vs 40mm — different wrist presence

At 42.8mm (Square), the G-Shock DW-5600 Square has a bolder wrist presence compared to the Master Collection Moonphase at 40mm. Water resistance differs: 200m (20 ATM) vs 30m (3 ATM).

Casio sits in the lower tier

The Casio G-Shock DW-5600 Square sits at $50–$100 and the Longines Master Collection Moonphase at $2,500–$5,000. On the specs that outlast any price: the G-Shock DW-5600 Square uses Mineral Glass with 2-Year Battery, against Sapphire Crystal and 72 Hours on the Master Collection Moonphase. Service intervals are typically 5-7 years for both.

200m (20 ATM) vs 30m (3 ATM)

The G-Shock DW-5600 Square is rated to 200m (20 ATM) while the Master Collection Moonphase handles 30m (3 ATM). The G-Shock DW-5600 Square is better suited for water activities.