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Description
Seiko Prospex Alpinist Automatic SPB377J1The new Caliber 6R54, which has a power reserve of three full days, powers the new Seiko Prospex Alpinist Mechanical GMT. High legibility The 24 hour display on the bezel and the 24 hour hand with red tip guarantee the legibility of the GMT function. Specifications Movement Caliber Number 6R54 Movement Type Automatic with manual winding Precision +25 to 15 seconds per day Power reserve Approx. 72 hours(3 days) Jewels 24 Functions 24 hour hand (dual
- The new Caliber 6R54, which has a power reserve of three full days, powers the new Seiko Prospex Alpinist Mechanical GMT.
- High legibility
- The 24-hour display on the bezel and the 24-hour hand with red tip guarantee the legibility of the GMT function.
Specifications
Movement
- Caliber Number 6R54
- Movement Type Automatic with manual winding
- Precision +25 to -15 seconds per day
- Power reserve Approx. 72 hours(3 days)
- Jewels 24
Functions
- 24-hour hand (dual time display function)
- Stop second hand function
Case/Band
- Case Material Stainless steel (super hard coating)
Case Size
- Thickness:13.6mm
- Diameter:39.5mm
- Lug-to-lug:46.4mm
- Crystal Curved sapphire crystal
- Crystal Coating Anti-reflective coating on inner surface
- LumiBrite Lumibrite on hands and index(es)
- Band Material Cow Steer
- Clasp Three-fold clasp with push button release
- Distance between lugs 20mm
Other Details
- Water Resistance 20 bar
- Magnetic Resistance 4,800 A/m
Features
- Screw-down crown
- See-through & Screw case back
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
Quality
Been using this for years. Great for prepping skin for foundation.
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Reviewed in the United States on April 13, 2026
★★★★★ 5
Love!
I love this product! I'm in my early 50s, and though I take good care of my skin I do have some more-than-fine lines, especially around my eyes (crow's feet). I won't say this primer erases those lines, but it manages to smooth out my skin enough that they look less noticeable (but still noticeable, don't get me wrong... only plastic surgery and Botox will fix that). I often wear this without any other makeup. It has the effect of smoothing and softening the look of your skin and minimizing pores, kind of like using a soft lighting filter and Photoshop photo editing software! It makes my face look softer, if that makes sense. Love it, love how smooth it feels on my skin. Don't love the smell (not that it's overly cloying), but it disappears quickly. One bottle lasts a loooong time, as in months and months, because a little goes a long way.
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Reviewed in the United States on March 21, 2017
★★★★★ 4
SLIGHTLY SMOOTHER BUT NOT BRIGHTER SKIN
Used it years ago as "Line Tamer"...same product, more money, but a nice primer for liquid, cream or powder foundations. It doesn't tame the lines much, which is likely why the name was changed...I have pink skin...this really doesn't help with that, but does provide a smooth base on which to begin your makeup application...I like it, even at the relatively expensive price as I use loose powder foundation and like the smooth appearance it lends to my makeup. I see zero "brightening" effect...
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Reviewed in the United States on December 8, 2015
★★★★★ 5
Awesome Product
I don't go anywhere without this primer. Sometimes where just the primer. Adds smooth texture and glow to my complexion. Makes putting on foundation a breeze. Feels like silk on the skin.
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Reviewed in the United States on January 9, 2020
★★★★★ 5
You won’t regret it
I put this on everyday rain or shine day or night it’s wonderful
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Reviewed in the United States on December 11, 2025