Mechanical Open Heart Series Watch NH9130-84LCitizen Mechanical Gent Open Heart collection. It has a power reserve of 40 hours once entirely wound. Additional feature include exhibition case back. A mechanical watch in which the natural motion of the wearer provided energy to wind the mainspring, making mutual winding unnecessary if worn enough. Calibre No. 8229 Movement Automatic Strap Stainless Steel Water Resistant Water Resistant to 50m Thickness 10. 7mm Case Size 40mm Case Stainless Steel

- Blood-oxygen Saturation Measurement (SpO2)

Platform: GIANNI T-BAR

ISO 764 class magnetic resistant

7mm Case Size 38mm

SKUT1274101605100

Countdown timer Measuring unit: 1 second Countdown range: 60 minutes Countdown start time setting range: 1 to 60 minutes (1-minute increments)

- Watch Case (colour): Black

Using in watch mode with heart rate measurement OFF: Approx

Screw-down crown

Choose the GM-5600 colorful take on the original square G-SHOCK design

Case Size: 45

Made of carbon fiber-reinforced fine resin for a thinner