Crafter Blue CB12 Curved End Watch Band Rubber Strap

Product Overview

The Crafter Blue CB12 Curved End Watch Band is a premium rubber strap engineered specifically for the Seiko Turtle Prospex Automatic Dive Watch series. Designed to deliver a precise fit and dependable performance, this replacement strap is compatible with a wide range of popular models including SRP773, SRP775, SRP777, SRP779, SBDY017, SBDY027, SBDY031, SBDY047, SBDY063, SRPE07, SRPE05, SRPE03, SRPD21, SRPD11, SRPC44, and SRPC91. Constructed from high-grade NBR (nitrile butadiene rubber) that undergoes a vulcanization process, the strap offers enhanced durability, superior resistance to oils and acids, and long-term shape retention—outperforming standard natural rubber in demanding conditions. The material also meets RoHS environmental compliance standards and is formulated to minimize skin irritation, making it a safe choice for individuals with sensitive skin. Whether you’re replacing a worn original band or customizing your Seiko Turtle for a fresh look, the CB12 combines rugged functionality with everyday comfort.

Key Features

• Curved End Design: The strap features precision-molded curved ends that contour seamlessly to the lugs of compatible Seiko Turtle watches, eliminating gaps and ensuring a clean, integrated appearance. This design not only enhances aesthetics but also improves wearability by reducing pressure points along the wrist.
• Vulcanized NBR Rubber: Made from pure nitrile butadiene rubber (NBR), the strap undergoes vulcanization—a process that strengthens the material and increases its resistance to degradation from oils, acids, heat, and UV exposure. This makes it ideal for diving, swimming, and other water-based activities where exposure to saltwater and chemicals is common.
• Hypoallergenic & RoHS Compliant: The rubber formulation is free from harmful substances and meets RoHS (Restriction of Hazardous Substances) standards. It is designed to reduce the risk of allergic reactions, offering peace of mind for users with sensitive skin or allergies to common rubber additives.
• Included Spring Bars: Each strap comes with a pair of replacement spring bars measuring 1.78mm in diameter. These are specifically sized to fit the CB12’s mounting holes and provide secure attachment to your watch case, simplifying installation and ensuring a stable connection.
• Brushed Stainless Steel Tang Buckle: The 20mm buckle is crafted from corrosion-resistant stainless steel with a brushed finish that resists fingerprints and scratches. Its low-profile design maintains the rugged, utilitarian look of the Seiko Turtle while providing reliable functionality in wet and humid environments.
• Multiple Color Options: Available in five versatile colors—Black, Navy, Orange, Grey, and Green—the CB12 allows for personalization to match different dial configurations or suit individual style preferences. Each color is evenly saturated and resistant to fading over time.

Technical Specifications

• Item Number: CB12
• Brand: CRAFTER BLUE
• Lug Width: 22mm
• Buckle Size: 20mm
• Buckle Type: Brushed Stainless Steel Tang Buckle
• Wrist Size Range: 5 inches to 8 inches (127 mm to 203 mm)
• Total Length: 135mm (long side) + 75mm (short side)
• Thickness: Approximately 6mm at the lug end, tapering to 3.5mm at the buckle end
• Spring Bar Hole Diameter: 1.78mm
• Material: NBR (Nitrile Butadiene Rubber), vulcanized
• Color Options: Black, Navy, Orange, Grey, Green
• Lug End Style: Curved End

Benefits & Use Cases

The CB12 rubber strap is built for active lifestyles and demanding environments. Its tapered profile and flexible NBR construction ensure a snug, comfortable fit across a broad range of wrist sizes, from 5 to 8 inches. The curved end design creates a flush, gap-free connection with the watch case, improving both comfort and visual continuity. This makes it especially suitable for extended wear during diving, snorkeling, hiking, or daily urban use. The oil- and acid-resistant properties of the vulcanized NBR rubber ensure the strap maintains its integrity when exposed to sweat, saltwater, sunscreen, and other common contaminants. For Seiko Turtle owners who value both form and function, the CB12 offers a durable, low-maintenance alternative that preserves the watch’s authentic dive watch character while enhancing long-term usability.

Important Notes

This strap is designed for compatibility with a wide range of Seiko Turtle Prospex models, including SRP773, SRP775, SRP777, SRP779, SBDY017, SBDY027, SBDY031, SBDY047, SBDY063, SRPE07, SRPE05, SRPE03, SRPD21, SRPD11, SRPC44, and SRPC91. Always confirm your watch’s lug width and end shape before ordering to ensure proper fitment. The included spring bars are standard size and intended for straightforward installation; however, users unfamiliar with watch band replacement are encouraged to seek professional assistance to avoid damage. Product warranty information can be accessed through the manufacturer’s support resources. Each package contains one rubber strap and two spring bars. This product is classified under Clothing, Shoes & Jewelry and is intended for unisex adult use.