smartwatch with blood oxygen sensor-SYMA38K1

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Seiko 5 Sports x Mechanical ft. Classic Women Casual Formal Round Water Resistant Watch SYMA38K1 SYMA38 SYMA-38 SYMA-38K1

Caliber Number / Movement
4207 (automatic with manual winding capacity)

Power Reserve / Accuracy
Approximately 40 hours (-35 to +55 seconds per day)

Crystal
Hardlex crystal

LumiBrite
Lumibrite on hands and indexes

Case & Band Material
Stainless steel case with metal band (three-fold clasp with push-button release)

Water Resistance
Water resistant

Case Size
Thickness: 10.7 mm
Diameter: 25.8 mm
Length: 31.0 mm

Other Specifications
Seiko 5 Sports x Mechanical ft. Classic
Screw case back
21 jewels
Day and date display
Regular timekeeping (analog display)