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OX® Tool/Watches Technical Specifications and Dimensions

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Technical data

CASE

(MID-CASE)

Machined Grade 3i Titanium¹, Sandblasted finish (micro-sandblasted). 

HANDS

Two colors are normally used: blue for the minute and seconds hands, and green for the hour or GMT hand.

FRONT CLOSURE

Grade 3i Titanium bezel¹, Sandblasted finish. Water resistance is ensured by the OX® T-shaped gasket. 

CASE BACK

(REAR CLOSURE)

Screw-down caseback in 316L stainless steel with a polished (gloss) finish, featuring a housing and thread for the blue ID+SYS™ disc.

CRYSTAL

High-transparency double-curved (domed) synthetic sapphire crystal, with blue AR anti-reflective coating on the inner surface.

MOVEMENT 

Customized premium MIYOTA® 9015M automatic caliber with 24 jewels, operating at 4 Hz / 28,800 vph, with a 42-hour power reserve. Accuracy of −5/+15 seconds per day², with the date positioned at 8 o’clock.

BAND/STRAP

Cosmoband™ XL strap, made of slightly elastic nylon and fully adjustable thanks to its water-resistant Velcro-style fastening system. It can be trimmed from its original 255 mm length. The PRO Series is compatible with any FROG300 FKM strap or titanium bracelet.

WATER RESISTANT

Complies with the ISO 6425 standard for saturation diving to WR 300 meters / 30 bar / 1,000 ft (sample tested up to 40 bar). Each watch is individually tested to 30 bar.

RESISTANCE TO THE ELEMENTS

Also meets the ISO 1413:2016 “Shock Resistant” standard. Tested in accordance with MIL-STD-810H methods and procedures. A FROG300 has a magnetic resistance of 4,800 A/m, according to ISO 764:2020.

INNERS

DIVER'S BEZEL

120-click unidirectional rotating bezel in 904L stainless steel, with micro-milled luminous markers filled with W9/X1-grade luminous material (varies by model). Nylon friction gasket. The bezel incorporates indicative depth/time references for recreational diving with air. These indications do not replace a dive computer, certified decompression tables or proper dive planning.

SPHERE/DIAL

Applied hour markers filled with W9/X1-grade luminous material. White in daylight, green in low-light or dark conditions. Approximate duration is 6 hours on all areas containing luminous material.

OTHERS

The internal bezel is operated by the “Dive Time” crown positioned at 10:30. The time and GMT setting crown is screw-down and positioned at 8 o’clock. An auxiliary nighttime illumination function is located on the side of the case marked “FROG”. All FROG300 models feature a helium escape valve.

BOX CONTENTS

White-finished cardboard box with a high-density blue foam interior. Includes a breathable blue fabric pouch for storing the watch and a set of tools for changing the watch strap. QR code providing direct online access to the owner’s manual and initial setup instructions, such as strap adjustment. The Gold Series is delivered in special packaging.

Dimensions and wheight

CASE

Ø45mm / 15.19 mm total height

SAPPHIRE 

3.00  mm thickness

BAND WIDTH

21mm (22-18mm if FKM)

LUG TO LUG

44 mm

TOTAL WEIGHT

Models with Cosmoband™: 98 g / 0.216 lb. Models with FKM: 137 g / 0.302 lb. 

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Technical data

CASE

(MID-CASE)

Machined Grade 3i Titanium¹, Sandblasted finish (micro-sandblasted). On the 18K Gold Series version, the finish is Gold IP (Ion Plated), Sandblasted (micro-sandblasted).

FRONT CLOSURE

Grade 3i Titanium bezel¹, Sandblasted finish. Water resistance is ensured by the OX® T-shaped gasket. On the Gold Series, the finish is yellow Gold IP (Ion Plated).

HANDS

Two colors are normally used: blue for the minute and seconds hands, and green for the hour or GMT hand. (The GMT hand is C5 red on the Depth Rainbow model. The GMT hand on the Aitutaki and Full Titanium models has a bluish tone. The Gold Series features a specially developed monochromatic Tiffany blue tone, grade X1.)

CASE BACK

(REAR CLOSURE)

Screw-down Grade 3i Titanium caseback¹ with Gold IP (Ion Plated) finish, featuring a housing and thread for the blue ID+SYS™ disc. On the Gold Series version, the caseback is made of solid 18K / 750 white gold alloyed with platinum.

CRYSTAL

High-transparency double-curved (domed) synthetic sapphire crystal, with blue AR anti-reflective coating on the inner surface.

MOVEMENT 

Customized premium MIYOTA® True GMT 9075M automatic caliber with 24 jewels, operating at 4 Hz / 28,800 vph, with a 42-hour power reserve. Accuracy of −2/+10 seconds per day², featuring a True GMT second time-zone complication (24-hour time zone) and the date positioned at 8 o’clock.

BAND/STRAP

BRACELET

Watch strap made from premium FKM fluoroelastomer, highly flexible and resistant. The FROG300 GMT can also use the two-tone solid titanium bracelet or the textile NATO-style Cosmoband™ straps, both XL and standard.

CLASP

The standard clasp on FKM straps is made of G3i titanium, with 316L stainless-steel components, and is compatible with the solid titanium bracelet. It features summer/winter micro-adjustment as well as a Diver’s extension for technical diving suits up to 5 mm, with two side buttons that allow quick release of the watch.

WATER RESISTANT

Complies with the ISO 6425 standard for saturation diving to WR 300 meters / 30 bar / 1,000 ft (sample tested up to 40 bar). Each watch is individually tested to 30 bar.

INNERS

DIVER'S BEZEL

120-click unidirectional rotating bezel in 904L stainless steel, with micro-milled luminous markers filled with W9/X1-grade luminous material. Nylon friction gasket. Graphics and luminous elements, always filled, vary depending on the GMT model. On the Gold Series, the treatment is full (all graphics with monochromatic fill).

SPHERE/DIAL

Applied hour markers filled with W9/X1-grade luminous material. White in daylight, green in low-light or dark conditions. Approximate duration is 6 hours on all areas containing luminous material, except on the HOT PINK, where duration is shorter. Depth Rainbow: tri-tone applied hour markers filled with W9/X1-grade luminous material. Red 24H sub-dial with red luminescence. Gold Series: monochromatic in 18K gold. Only the 12-3-6-9 hour markers feature luminescence.

RESISTANCE TO THE ELEMENTS

Also meets the ISO 1413:2016 “Shock Resistant” standard. Tested in accordance with MIL-STD-810H methods and procedures. A FROG300 has a magnetic resistance of 4,800 A/m, according to ISO 764:2020.

OTHERS

The internal bezel is operated by the “Dive Time” crown positioned at 10:30. The time and GMT setting crown is screw-down and positioned at 8 o’clock. An auxiliary nighttime illumination function is located on the side of the case marked “FROG”. All FROG300 models feature a helium escape valve.

BOX CONTENTS

White-finished cardboard box with a high-density blue foam interior. Includes a breathable blue fabric pouch for storing the watch and a set of tools for changing the watch strap. QR code providing direct online access to the owner’s manual and initial setup instructions, such as strap adjustment. The Gold Series is delivered in special packaging.

Dimensions and wheight

CASE

Ø45mm / 15.19 mm total height

SAPPHIRE 

3.00  mm thickness

BAND WIDTH

22-18 mm (21mm if Cosmoband©)

LUG TO LUG

44 mm

TOTAL WEIGHT

Models with Cosmoband™: 98 g / 0.216 lb. Models with FKM: 137 g / 0.302 lb. Full Titanium: 161.6 g / 0.356 lb. Gold Series 18K: 143.8 g / 0.317 lb

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Technical data

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© 2023–2026 OX OCEANIX WATCHES LTD. ALL RIGHTS RESERVED. OX®, OCEANIX®, FROG300®, COSMOBAND© AND ID+SYS™ ARE TRADEMARKS OF OX OCEANIX WATCHES LTD. CERTAIN TRADEMARKS MAY BE REGISTERED IN MULTIPLE JURISDICTIONS. ID+SYS™ IS AN INTERNATIONALLY REGISTERED DESIGN AND PATENT PENDING IN VARIOUS JURISDICTIONS. THE FROG300® MODEL DESIGN AND DIVER CONFIGURATION ARE PROTECTED BY APPLICABLE DESIGN AND INTELLECTUAL PROPERTY LAWS. MIYOTA® AND CITIZEN® ARE TRADEMARKS OF CITIZEN WATCH CO., LTD. ALL OTHER THIRD-PARTY TRADEMARKS, PRODUCT NAMES, LOGOS, OR BRANDS (INCLUDING NASA® AND US COAST GUARD®) ARE THE PROPERTY OF THEIR RESPECTIVE OWNERS AND ARE REFERENCED SOLELY FOR INFORMATIONAL, DESCRIPTIVE, OR ILLUSTRATIVE PURPOSES. NO AFFILIATION, ENDORSEMENT, OR SPONSORSHIP IS IMPLIED. PRODUCT DESCRIPTIONS, TECHNICAL SPECIFICATIONS, AND IMAGES ARE PROVIDED FOR INFORMATIONAL PURPOSES ONLY AND MAY BE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE AS PART OF OUR CONTINUOUS PRODUCT DEVELOPMENT PROCESS. WATCH SIZES ARE NOT SHOWN AT ACTUAL SCALE, AND COLOURS MAY VARY SLIGHTLY FROM THE FINAL PRODUCT. DISPLAYED PRICES INCLUDE APPLICABLE SALES TAXES WHERE REQUIRED BY LAW. DEPENDING ON THE DESTINATION COUNTRY, ADDITIONAL CUSTOMS DUTIES, IMPORT TAXES, OR HANDLING FEES MAY APPLY AND ARE THE SOLE RESPONSIBILITY OF THE BUYER. OX OCEANIX WATCHES LTD IS A COMPANY INCORPORATED IN HONG KONG AND IS THE CURRENT LEGAL ENTITY OPERATING THIS WEBSITE AND ONLINE STORE. THE BRAND AND BUSINESS WERE ORIGINALLY FOUNDED IN THE UNITED STATES IN 2023.

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