Citizen Luna Open Heart Silver Dial Automatic Watch PR1040-88A

Citizen Luna Open Heart Automatic Watch

The Citizen Luna PR1040-88A is a dress watch designed for women who value mechanical craftsmanship. Its open-heart silver dial reveals the automatic calibre 6628 in motion. A 28.50 mm stainless steel case and matching bracelet secure with a deployment clasp. Water resistance is rated to 50 metres.

Sapphire Crystal And Deployment Clasp

The sapphire crystal protects the dial from everyday scratches far better than mineral glass. A deployment clasp closes the bracelet with a single motion and reduces wear on the links. The pull-push crown sets the time and winds the mainspring when the watch has stopped. Roman numerals mark 12, 3 and 9 o'clock alongside dotted indices.

Automatic Movement Practical Limits

The calibre 6628 runs only while worn or recently wound; it will stop after roughly two days off the wrist. No battery exists to replace, but the movement cannot be hand-wound via the crown alone. The 50 metre rating suits splashes and brief immersion, not swimming or diving. A fixed bezel offers no timing function.