Seiko 5 Sports SRPD/SKX Custom Mod 'Boston Dynamics' Edition
Custom/Modded Dive-Style Tool Watch · Original manufacturer: Seiko (Seiko Group); Modified by an independent watch builder or as a custom commission for Boston Dynamics staffers.
Period: Modern (Post-2019) Customization Period. The watch is based on the '5KX' design language which modernizes the classic SKX diver aesthetic.
Type
Custom/Modded Dive-Style Tool Watch
Brand
Original manufacturer: Seiko (Seiko Group); Modified by an independent watch builder or as a custom commission for Boston Dynamics staffers.
Movement
Automatic, Seiko Caliber 4R36; features hacking, hand-winding, 21,600 bph frequency, approximately 41 hours power reserve, and 24 jewels.
Dimensions
Diameter: 42.5mm; Thickness: 13.4mm; Lug-to-lug: 46mm; Lug width: 22mm. It wears compact due to the short lug-to-lug distance.
Description
This is a highly customized 'Mod' watch based on the Seiko 5 Sports architecture. It combines the reliability of a Japanese tool watch with the corporate branding of the robotics firm Boston Dynamics. The watch features a monochromatic 'stealth' black PVD case contrasted by a striking light blue seconds hand and a matching blue rubber strap. The dial represents a custom printed or applied logo piece, likely created for a small group of employees or fans of the engineering firm.
Key Features
Custom Boston Dynamics logo dial, light blue accent seconds hand, Yacht-Master style bezel insert, 4 o'clock crown position, and curved-end integrated rubber strap.
Dial Description
Custom matte black dial featuring the 'Boston Dynamics' corporate logo. Includes applied circular and rectangular luminous indices, a day-date window at 3 o'clock, and a custom blue 'lightning bolt' or sawtooth seconds hand.
Case Material
Black PVD-coated Stainless Steel (likely 316L) with a matte/satin finish.
Crystal Type
Flat mineral glass (Seiko Hardlex) or aftermarket flat sapphire; features a visible scratch/smudge in the center and significant dust particles under the crystal.
Bezel Details
Unidirectional rotating bezel with a YM-style (Yacht-Master) textured ceramic or metal insert. Features raised numerals and a matte sandblasted finish.
Crown & Pushers
Push-pull crown positioned at 4 o'clock (characteristic of the SRPD/SKX case), finished in black PVD with a knurled texture for grip.
Bracelet or Strap
Blue fitted curved-end silicone or rubber strap designed to integrate seamlessly with the case lugs.
Caseback Details
Likely a screw-down exhibition caseback with a Hardlex window, standard for the Seiko 5 Sports SRPD line.
Movement Type
Automatic, Seiko Caliber 4R36; features hacking, hand-winding, 21,600 bph frequency, approximately 41 hours power reserve, and 24 jewels.
Water Resistance
Rated at 100m (10 Bar) on the base model, suitable for swimming but not professional diving due to the push-pull crown. Custom assembly may have compromised this rating if not pressure tested.
Origin & Provenance
Movement and case base from Japan/Malaysia (Seiko); customization likely performed in the USA or by a regional modder.
Age Estimate
Circa 2020-2023, based on the availability of the SRPD base model and the modern logo design.
Cultural Significance
Represents the 'Hobbyist Era' of watchmaking where parts are interchangeable (often referred to as 'Seiko Modding'). It bridges the gap between mechanical horology and Silicon Valley/Tech culture.
Condition Notes
Fair to Good. Visible debris and dust particles are present under the crystal on the dial surface. There is a vertical scratch or mark on the crystal between the 12 and 1 o'clock positions. The PVD coating appears intact but dusty.
Value Estimate
Calculated value: $250 - $450 USD. The value is based on the cost of the base Seiko watch plus the custom parts and labor; however, custom 'logo' dials can sometimes decrease resale value unless sold to a specific fan of the brand.
Care & Maintenance
Water resistance should be tested since it is a custom-opened watch. Service the 4R36 movement every 5-7 years. Use a soft brush and water to clean the silicone strap.
Similar Watches
Standard Seiko SRPD79 (all black), Rolex Yacht-Master 42 (design inspiration for the bezel), or the original Seiko SKX007.
Interesting Facts
The 'Seiko Mod' community is massive, allowing users to build watches that major brands would never produce. Seeing a 'Boston Dynamics' logo suggests this is likely a private commission or an enthusiast's tribute to the robotics company.