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Seiko SRP775 Specifications
| Reference | SRP775, SRP775K1 |
|---|---|
| Case Size | 45mm |
| Lug Width | 22mm |
| Lug-to-Lug | 48mm |
| Thickness | 13.4mm |
| Case Material | stainless steel (gold-tone bezel) |
| Crystal | Hardlex |
| Water Resistance | 200m |
| Movement | 4R36 (automatic) |
| Bezel | rotating dive bezel (gold-tone) |
| Crown | screw-down |
| Case Back | screw-down |
| Price Range | $300-$450 |
Compatible Straps for the Seiko SRP775
The SRP775 uses a 22mm Lug Width and is compatible with the following strap types.
| Type | Recommended Brand | Why It Works | Price Range | Link |
|---|---|---|---|---|
| NATO/ZULU | Strapcode | Classic look, easy to swap, fits 22mm lugs | $15–$80 | |
| rubber/silicone | Crafter Blue | Water-resistant, comfortable for daily wear | $15–$80 | |
| oyster bracelet | Uncle Seiko | Sporty bracelet, solid end links available | $15–$80 | |
| jubilee bracelet | Barton | Classic bracelet style, comfortable links | $15–$80 | |
| leather | Archer | Dresses up the watch, fits 22mm lugs | $15–$80 | |
| canvas | Strapcode | Casual, durable field-watch aesthetic | $15–$80 |
Replacement Parts for the Seiko SRP775
| Part | Description | Compatibility Note |
|---|---|---|
| crystal (Hardlex or sapphire upgrade) | Protective cover over the dial | Fits 45mm case |
| bezel insert | Outer ring marking | Matches rotating dive bezel (gold-tone) configuration |
| chapter ring | Inner ring with minute markings | Specific to 45mm case |
| crown with stem | Time-setting knob on case side | screw-down type |
| spring bars | Pins that hold the strap to the case | 22mm, 1.5mm diameter recommended |
| case back gasket | Seal that maintains water resistance | Required for 200m WR rating |
Modding the Seiko SRP775
The SRP775 is a popular platform for modding. Here are the most common modifications.
- bezel insert — Swap the stock bezel insert for a ceramic, lumed, or differently colored option.
- crystal upgrade to sapphire — Upgrade the stock mineral/Hardlex crystal to a scratch-resistant sapphire crystal.
- chapter ring — Replace with a contrasting or lumed chapter ring for improved readability.
- dial swap — Install an aftermarket dial for a completely new look.
Frequently Asked Questions
What lug width is the Seiko SRP775?
The Seiko SRP775 has a 22mm lug width, same as all Turtle models.
Are SRP775 and SRP777 parts interchangeable?
Yes. The SRP775 and SRP777 share the same case, movement, crystal, and lug width. The only difference is the bezel insert color and dial.
What strap looks best on the SRP775 gold Turtle?
Brown leather and black rubber straps pair well with the gold-tone bezel. Many owners also use brown NATO straps to complement the warm tones.