The Seiko 5 SNK381K1 is a classic men’s automatic watch that combines rugged military-inspired styling with trusted Japanese craftsmanship. Featuring a bold black dial, durable stainless steel case and bracelet, and a 21-jewel automatic movement, this timepiece is designed for men who appreciate reliability, precision, and timeless design.

Powered by the dependable Seiko Automatic movement, the SNK381K1 operates without a battery, using the natural movement of your wrist for accurate timekeeping. Its 37 mm case offers a comfortable fit, while the day and date display provides everyday convenience. The transparent case back showcases the automatic movement, and 30-meter water resistance makes it ideal for daily wear and light water exposure.

PRODUCT DETAILS

• Brand: Seiko
• Collection: Seiko 5
• Model: SNK381K1
• Gender: Men’s
• Display Type: Analog
• Movement: Japanese Automatic (21 Jewels)
• Case Material: Stainless Steel
• Band Material: Stainless Steel
• Band Color: Silver
• Dial Color: Black
• Dial Size: 37 mm
• Glass: Hardlex Crystal
• Water Resistance: 30 Meters (3 ATM)
• Case Thickness: 11 mm
• Features: Day & Date Display
• Case Back: Transparent Exhibition Case Back
• Clasp: Fold-Over Clasp with Double Push Button
• Warranty: 1 Year International Warranty
• Country of Origin: Japan

KEY FEATURES

• Original Seiko 21-Jewel Automatic Movement
• Military-Inspired Black Analog Dial
• Premium Stainless Steel Case & Bracelet
• Scratch-Resistant Hardlex Crystal
• Day & Date Display
• Transparent Exhibition Case Back
• Battery-Free Self-Winding Movement
• Fold-Over Clasp with Double Push Button
• 30-Meter Water Resistance
• Premium Japanese Craftsmanship

FUNCTIONS

• Automatic Timekeeping
• Day Display
• Date Display
• Hour, Minute & Second Hands
• Self-Winding Mechanical Movement

SPECIFICATIONS

Case

• Case Material: Stainless Steel
• Case Shape: Round
• Case Size: 37 mm
• Case Thickness: 11 mm
• Case Color: Silver
• Bezel: Fixed Bezel
• Case Back: Transparent Exhibition Case Back

Display

• Display Type: Analog
• Dial Color: Black
• Dial Size: 37 mm
• Crystal: Hardlex Crystal

Band

• Band Material: Stainless Steel
• Band Color: Silver
• Clasp: Fold-Over Clasp with Double Push Button

Movement

• Movement Type: Japanese Automatic
• Jewels: 21 Jewels
• Power Source: Self-Winding Mechanical Movement

Glass

• Scratch-Resistant Hardlex Crystal

Water Resistance

• 30 Meters (3 ATM)
• Suitable for everyday wear, splashes, and light rain.

WARRANTY

1 Year International Warranty

STYLE & OCCASION

• Business Wear
• Casual Wear
• Office Wear
• Military Style
• Daily Wear
• Classic Style
• Outdoor Wear
• Gift for Men
• Birthday Gift
• Anniversary Gift

PACKAGE INCLUDES

• 1 × Original Seiko 5 SNK381K1 Watch
• 1 × Original Seiko Box
• 1 × User Manual
• 1 × International Warranty Card