Citizen Watch Promaster PROMASTER NB6021-17E Marine Series

Product Overview

The Citizen Watch Promaster NB6021-17E Marine Series is a purpose-built mechanical diver’s watch designed for men who demand uncompromising performance in challenging environments. Part of Citizen’s renowned Promaster collection, this timepiece is engineered specifically for underwater use, combining professional diving capabilities with everyday ruggedness. With a certified 200-meter water resistance rating, it’s suitable for recreational scuba diving, snorkeling, and other water-based activities. Unlike quartz or solar-powered watches, this model runs on a self-winding mechanical movement, harnessing the natural motion of the wearer’s wrist to keep accurate time—eliminating the need for battery changes and ensuring reliable operation even in remote locations. The durable urethane band is both flexible and corrosion-resistant, offering comfort during extended wear and resilience against saltwater, sweat, and UV exposure. Whether you’re exploring ocean depths or navigating daily adventures, the NB6021-17E delivers the dependability and functionality expected from a true marine-grade timepiece.

Key Features

• 200-Meter Water Resistance – Officially rated for depths up to 200 meters, this watch meets the standards required for recreational diving. It’s built to withstand the pressure and conditions encountered during underwater exploration, making it a trusted tool for divers and water sports enthusiasts alike.
• Mechanical (Self-Winding) Movement – Powered by kinetic energy generated through wrist movement, the mechanical caliber ensures continuous operation without batteries. This makes it ideal for extended trips or situations where access to power sources is limited.
• Urethane Band – The band is crafted from high-quality urethane, offering a lightweight, flexible fit that resists degradation from saltwater, chlorine, and prolonged sun exposure. Its ergonomic design enhances comfort during long dives or active wear.
• Marine-Themed Design – As part of the Promaster Marine Series, the watch features a bold, functional aesthetic with high-contrast dial elements and clear markings. This design enhances readability in low-light underwater conditions or bright surface environments.
• Rugged Build Quality – Constructed to endure the rigors of marine use, the case and crystal are designed to resist impacts, corrosion, and pressure changes. Every component is selected for durability and long-term performance in demanding conditions.

Technical Specifications

• Item Model Number: NB6021-17E
• Department: Men
• Package Dimensions: 4.72 x 3.5 x 3.43 inches
• Package Weight: 2.65 ounces
• Manufacturer: Citizen
• ASIN: B0B6GY1ZCZ
• Date First Available: February 28, 2023
• Water Resistance: 200 meters
• Band Material: Urethane
• Movement Type: Mechanical (self-winding)
• Warranty: Refer to manufacturer for warranty details

Benefits & Use Cases

The Citizen Promaster NB6021-17E is more than just a watch—it’s a reliable companion for anyone who spends time in or around water. Its 200-meter water resistance makes it suitable for certified divers, snorkelers, and surfers who need a timepiece that can keep up with their activities. The mechanical movement ensures consistent timekeeping without reliance on batteries, which is especially valuable during extended outdoor excursions or travel to areas without easy access to replacement parts. The urethane band not only provides a secure and comfortable fit but also maintains its integrity in harsh conditions, resisting cracking, fading, and deterioration from saltwater and sunlight. This makes the watch well-suited for marine professionals, rescue personnel, and outdoor adventurers who need gear that performs under pressure. Beyond diving, it serves as a durable everyday watch for those who appreciate functional design and long-term reliability. Its straightforward, no-nonsense appearance appeals to users who value practicality over flash, while still delivering the precision and build quality associated with the Citizen brand.

Important Notes

Warranty coverage for this product is provided by the manufacturer and may vary depending on your region. For complete details, please consult the official Citizen website or the documentation included with your purchase. This watch is designed for men and features a robust case and band that may not suit smaller wrists. To preserve the longevity of the urethane band, it’s recommended to rinse the watch with fresh water after exposure to saltwater or chlorine. The mechanical movement requires periodic maintenance—typically every 3 to 5 years—to ensure optimal performance and accuracy. Always ensure the crown is fully tightened before entering the water to maintain the watch’s water resistance. The model number NB6021-17E should be used when seeking support or replacement parts. First made available in February 2023, this timepiece represents Citizen’s ongoing commitment to durable, functional design for active lifestyles.