A watch strap, watch band,watch bracelet or watch belt is a bracelet that straps a wrist watch onto the wrist.  Watch straps may be made of leather, plastic, rubber, cloth, or metal, sometimes in combination. It can be regarded as a fashion item, serving both a utilitarian and decorative function. Some metal watch straps may be plated with, or even in rare cases made of, precious metals.
Watch straps may close with a buckle or a folding clasp. Expanding watch straps are designed to expand elastically, often by the use of metal springs in a segmented design, and may be slipped on like a bracelet. Attachment points for the strap to the watch are largely standardized, with a spring bar (a spring-loaded double-ended pin) used to anchor the watch strap to holes in a bracket that is integral to the watch case, allowing worn watch straps to be replaced or swapped with new straps for fashion purposes.
Metal watch straps are typically stainless steel. The most common metal watch strap styles are the folded link, pushpin, and screw-in styles. 
Both metal watch cases and watch straps incorporating metal parts can sometimes cause contact dermatitis in susceptible individuals.  Special anti-allergy watch straps, like a NATO style watch strap, which shield the skin from exposure to metal parts, are available for sufferers of this type of dermatitis.
Specialist expanding watch straps exist for use with diving watches. The use of wet, or in some cases, dry suits require the strap to expand in order to accommodate the added material, which increases the circumference of the wrist. Many watch straps intended for diving watches have rippled or vented sections near the attachment points on the watch case to facilitate the required flexibility to strap the watch around the bare wrist or around wet or dry suits.
NATO watch straps, also known as "NATO Straps", were developed by the UK Ministry of Defence (MoD) for wartime usage (DefStan 66-47  ). The colour of the nylon ribbon (20 mm wide) shall be to BS 4800 card number 3, reference 18B25, colour grey. It is a one piece strap slid through the spring bars of the watch case and then slid into the appropriate notch, and then folded back to secure excess strap and prevented from sticking out of the main watch strap portion.   As the style gained popularity since its introduction in 1973, military personnel began to customize their watch straps, incorporating the colours of their units, creating the colourful regimental stripe patterns NATO straps are now often known for. 
The strap has been used in James Bond movies. 
The Zulu watch strap is a NATO watch strap variation generally using a thicker weave of fabric and more substantial metal hardware using rounded loops and an oval-shaped buckle and both are typically made of nylon. 
Bund straps, Perlon straps, Marine Nationale straps, Zulu straps, OctoPod straps, and NATO straps go completely around the wrist, including behind the case.  Other wrist strap styles allow the back of the watch case to directly contact the skin. 
A wallet is a flat case or pouch often used to carry small personal items such as paper currency, credit cards; identification documents such as driver's license, identification card, club card; photographs, transit pass, business cards and other paper or laminated cards. Wallets are generally made of leather or fabrics, and they are usually pocket-sized and foldable.
A strap, sometimes also called strop, is an elongated flap or ribbon, usually of leather or other flexible materials.
A backplate and wing is a type of scuba harness with an attached buoyancy compensation device (BCD) which establishes neutral buoyancy underwater and positive buoyancy on the surface. Unlike most other BCDs, the backplate and wing is a modular system, in that it consists of separable components. The core components of this system are:
Citizen Watch Co., Ltd. is an electronics company primarily known for its watches and is the core company of a Japanese global corporate group based in Nishitokyo, Tokyo, Japan. In addition to Citizen brand watches, it is the parent of American watch company Bulova, and is also known for manufacturing small electronics such as calculators.
A belt buckle is a buckle, a clasp for fastening two ends, such as of straps or a belt, in which a device attached to one of the ends is fitted or coupled to the other. The word enters Middle English via Old French and the Latin buccula or "cheek-strap," as for a helmet. Belt buckles and other fixtures are used on a variety of belts, including cingula, baltea, baldrics and later waist-belts.
The Rolex Oyster Perpetual Submariner is a line of sports watches designed for diving and manufactured by Rolex, resistant to water and corrosion. The first Submariner was introduced to the public in 1954 at the Basel Watch Fair. It was the first watch to be waterproof up to 100m. The Rolex Submariner is considered "a classic among wristwatches", manufactured by one of the most widely recognized luxury brands in the world. Due to its huge popularity, there are many homage watches by well-established watchmakers, as well as illegal counterfeits. The Rolex Submariner is part of Rolex's Oyster Perpetual line.
A diving watch, also commonly referred to as a diver's or dive watch, is a watch designed for underwater diving that features, as a minimum, a water resistance greater than 1.0 MPa (10 atm), the equivalent of 100 m (330 ft). The typical diver's watch will have a water resistance of around 200 to 300 m, though modern technology allows the creation of diving watches that can go much deeper. A true contemporary diver's watch is in accordance with the ISO 6425 standard, which defines test standards and features for watches suitable for diving with underwater breathing apparatus in depths of 100 m (330 ft) or more. Watches conforming to ISO 6425 are marked with the word DIVER'S to distinguish ISO 6425 conformant diving watches from watches that might not be suitable for actual scuba diving.
Montres Corum Sàrl, commonly referred to as Corum, is a Swiss watchmaker based in La Chaux-de-Fonds, Canton of Neuchâtel. Founded in 1955, it makes high-quality and high-price watches, many of which are limited editions. The benchmark watch series for Corum is its "Admiral's Cup" series. The company is owned by Hong Kong-based Citychamp Watch & Jewellery Group Limited together with Eterna. Both of these Swiss watch companies are managed by a management committee composed by Yeznig Magdhessian, Soon Boon Chong & Maxime Ranzoni.
The J12 is a line of Swiss made luxury watches introduced in 1999 by French haute couture house Chanel. The J12 was launched in 1999 and is considered as a unisex watch. The watch was designed by the artistic director of the house, Jacques Hélleu, who found inspiration in the two worlds he loved most: automobiles and sailing. Chanel uses highly scratch-resistant ceramic for the watch's case and bracelet. Other materials are used as well, such as titanium and for one of the house's limited edition watches, sapphires were used to create the entirety of the bracelet and case.
The Rolex Yacht-Master is a luxury sports watch manufactured by Rolex and first introduced in 1992 as Reference 16628 in 18-karat yellow gold. In 1994, Rolex released a lady's model (69628) and a mid-size model (68628) at 35mm, marking the first time in Rolex history that a professional series watch was available in smaller than the standard size case. In 1996, Rolex introduced two-tone to the lady's and mid-size line.
Shock resistant is a common mark stamped on the back of wrist watches to indicate how well a watch copes with mechanical shocks. In a mechanical watch, it indicates that the delicate pivots that hold the balance wheel are mounted in a spring suspension system intended to protect them from damage if the watch is dropped. One of the earliest and most widely used was the Incabloc system, invented in 1934. Before the widespread adoption of shock-resistant balance pivots in the 1950s, broken balance wheel staffs were a common cause of watch repairs.
The Omega Seamaster is a line of automatic winding mechanical diving watches from Omega with a history that can be traced back to the original water-resistant dress watch released in 1948. The Seamaster collection is perhaps best known today for the Seamaster Diver Professional 300m model that has been worn in the James Bond movie franchise since 1995. Originally conceived as a dressy, water-resistant timepiece, the Omega Seamaster has evolved to a robust sports watch line typically with a stainless steel case, robust water resistance, and an official certified chronometer certified movement within. The Diver Professional 300m is most famous for its "train track" five link steel bracelet, its helium release valve at the 10:00 position, the wave pattern dial on certain model generations, and the skeletonized handset.
The Rolex Oysterquartz was a quartz watch made by Rolex.
The Bozeman Watch Company of Bozeman, Montana, was an American company that designed and engineered its own timepieces and had its mechanical components certified by the Contrôle officiel suisse des Chronomètres (COSC) certified timepieces. The company went out of business in 2015.
MIL-W-46374 is a specification first published on October 30, 1964, for US military watches. The 46374 was specified as an accurate, disposable watch. In its span, it encompassed metal and plastic cased watches with both mechanical and quartz movements. The 46374 replaced the MIL-W-3818, reducing cost and inheriting the dial from the MIL-W-3818B. These were lower quality watches than the 15 jewel movements, the transition started as US involvement in Vietnam ramped up.
US military watches are watches that are issued to US military personnel.
The TX Watch Company was launched in 2006 by the Timex Group, an international holding group and corporate parent of global watchmaking companies, including Timex Group USA, Inc., TMX Philippines, Inc., and Timex Group India Ltd.
A folding clasp or deployant clasp or deployant buckle is a device used to close a watch strap.
Montres Tudor SA, or simply Tudor, is a Swiss watchmaker based in Geneva, Switzerland. Registered in 1926 by Hans Wilsdorf, founder of Rolex, the brand remains a sister company to Rolex; both companies are owned by the Hans Wilsdorf Foundation. Tudor was initially known for watches produced for the military and professional divers. From the 1960s to 1980s, several navies issued Tudor Submariners to their divers, including the US Navy SEALs and the French Marine Nationale.
A bolt snap is a type of snap hook with a manually operated bolt action slide gate of medium security used to clip a light load to a ring, eye, loop or bight to temporarily secure or suspend an object. They are used for a wide variety of applications including dog leads and for clipping scuba equipment to the diving harness. A similar but more secure device used to attach sails to a stay is known as a piston hank. It differs from a snap shackle in that the load is not carried by the gate. The bolt snap must be actively operated by the user to clip or unclip, and is not easily snagged or unintentionally clipped or unclipped by pressing or bumping against the surroundings.