- 38.0 mm case
- 200 m water resistant
- Sapphire crystal
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Seiko - Brand New
Seiko Prospex Land "Baby Alpinist" - SPB155
About this timepiece
Rich in mountaineering spirit, the Seiko Prospex Alpinist (ref. SPB155) is a modern reimagining of Seiko's 1959 sports watch, sized down to a compact 38mm stainless steel case that suits today's tastes and still carries a pleasing vintage feel. Its gradated green dial shifts gently in tone, joined by LumiBrite hands and markers and a tidy date window. The result is a versatile everyday watch with a quietly adventurous character.
Inside works Seiko's caliber 6R35, a 24-jewel automatic movement running at 21,600 vibrations per hour with approximately 70 hours of power reserve, and it winds itself automatically or by hand. The see-through screw case back puts that movement on view, and together with a screw-down crown it helps the watch reach 200 meters of water resistance. Over the gradated dial sits a curved sapphire crystal with an anti-reflective coating on its inner surface, and a three-fold push-button clasp secures the stainless steel bracelet for city days and outdoor weekends alike.
Features
- Gradated green dial – with LumiBrite hands and markers and a date window.
- Caliber 6R35 automatic – 24 jewels and approximately 70 hours of power reserve, with manual winding.
- Compact 38mm case – stainless steel, sized for contemporary tastes with a vintage feel.
- 200m water resistance – secured by a screw-down crown and a see-through screw case back.
- Curved sapphire crystal – anti-reflective coated on its inner surface.
Specifications
- Reference: SPB155
- Collection: Prospex Land (Alpinist)
- Gender: Men's
- Caliber Number: 6R35
- Movement Type: Automatic with manual winding
- Vibrations: 21,600 vibrations per hour
- Precision: +25 to -15 seconds per day
- Power Reserve: Approx. 70 hours
- Jewels: 24
- Functions: Stop second hand function, date display
- Case Material: Stainless steel
- Diameter: 38.0 mm
- Thickness: 12.9 mm
- Lug-to-Lug: 46.0 mm
- Dial Color: Green (gradated)
- Crystal: Curved sapphire crystal
- Crystal Coating: Anti-reflective coating on inner surface
- LumiBrite: LumiBrite on hands and index(es)
- Band: Stainless steel bracelet
- Clasp: Three-fold clasp with push button release
- Distance Between Lugs: 20 mm
- Water Resistance: 20 bar, 200 meters (660 feet)
- Weight: 144.0 g
- Features: Screw-down crown, see-through and screw case back
Timepiece History
Seiko's story began in 1881, when a 21-year-old entrepreneur, Kintaro Hattori, opened a shop selling and repairing watches and clocks in central Tokyo. The first watch to carry the Seiko name followed in 1924, and Seiko went on to introduce a long line of watchmaking firsts, including the Quartz Astron, the world's first quartz wristwatch, on December 25, 1969. In 2024, Seiko celebrated the 100th anniversary of the Seiko brand.
The SPB155 carries the Alpinist name, which dates back to the Laurel Alpinist of 1959, Seiko's first sports watch. Built for mountain climbers and field sports enthusiasts, the original had a screw-back case to keep out dust and sand, a sturdy leather cuff strap and luminous hands and indexes, and its focus on durability and functionality went on to influence later Seiko sports watches, including the famous diver's watch. The SPB155 reimagines that 1959 original in a smaller case, following a Spring 2019 limited edition and other additions to the line.
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Payment options
Pay over time with Shop Pay, PayPal, or lease-to-own.
See all financing options, including Synchrony Luxury in storeShop Pay Installments Split your purchase into installments
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At checkout, choose Shop Pay, then Pay in installments. You'll see your exact plan before you confirm.
PayPal Pay Later Pay in 4 or Pay Monthly
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At checkout, choose PayPal, then Pay Later. PayPal shows your exact plan before you confirm.
Lease-to-own · Acima or Progressive No credit needed* · 90-day purchase option
Lease-to-own is not a loan or credit, so there's no APR. Your payment amount and schedule are set in your lease agreement and depend on your state and pay schedule. The lowest-cost way to own is the 90-day purchase option.
Acima Leasing
- Approvals up to $5,000
- 90-day early purchase option (3 months in CA)
- Own in 12, 18 or 24 months
- Payments set around your payday
Progressive Leasing
- No credit needed*
- 90-day purchase option (3 months in CA)
- 12 months to ownership
- Weekly, bi-weekly or monthly payments
Apply above to see your approval amount, or choose Acima or Progressive Leasing at checkout to apply and sign your lease in minutes. Questions? Call us at 661-861-8414.
Estimates & disclosures
Estimates are based on the item price shown, before tax, shipping and any personalization charges, and use the same estimated rates each provider shows in its own payment estimates. Your actual plan, rate and payments are set by the provider when you apply. All options are subject to an eligibility check and approval.
Shop Pay Installments: Rates from 0–36% APR. Payment options through Shop Pay Installments are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required. State notices to consumers: affirm.com/licenses.
PayPal Pay Later: Pay in 4 is interest-free and available for eligible purchases of $30–$1,500. Pay Monthly is an interest-bearing installment loan issued by WebBank for eligible purchases of $49–$10,000, with terms of 3 to 24 months depending on purchase amount and a fixed APR of 0%–35.99% based on creditworthiness. Subject to consumer credit approval. Pay Monthly is currently not available to residents of AK, CT, HI or WA. Pay in 4 is currently not available to residents of MO. See PayPal terms.
*No credit needed: lease providers may obtain information from consumer reporting agencies. Not all applicants are approved.
Acima: The advertised transaction is a rental-purchase agreement (rent-to-own agreement, consumer rental-purchase agreement or a lease/lease-purchase agreement, depending on your state) with Acima. Ownership is optional. You will not own the merchandise until the total amount necessary to acquire ownership is paid in full or you exercise your early purchase option. Acquiring ownership by leasing costs more than the retailer's cash price. "Approvals up to $5,000" refers to the maximum amount Acima will spend to acquire goods from a retailer for lease to you. Not available in MN, NJ, WI or WY.
Progressive Leasing: The advertised service is lease-to-own or a rental- or lease-purchase agreement provided by Prog Leasing, LLC, or its affiliates. Acquiring ownership by leasing costs more than the retailer's cash price. No credit needed: Progressive Leasing obtains information from credit bureaus. Not all applicants are approved. Standard agreement offers 12 months to ownership. 90-day purchase options cost more than the retailer's cash price (except 3-month option in CA). Not available in MN, NJ, VT, WI or WY.
- Authorized Seiko retailer
- Manufacturer warranty
Care Instructions
Daily Care
• Wipe the case and bracelet with a soft microfiber cloth after wear to remove oils, dust, and fingerprints.
Cleaning
• Use a soft cloth lightly dampened with water and mild soap for occasional cleaning.
• Dry the watch thoroughly with a clean, soft cloth.
What to Avoid
• Avoid bleach, chlorine, harsh chemicals, abrasive cleaners, and household cleaning products.
• Do not use polishing compounds unless specifically recommended by the watch manufacturer.
Stainless Steel and Titanium
• Light surface marks may develop over time with normal wear.
• Titanium can show cosmetic marks differently than stainless steel because of its lighter weight and surface characteristics.
Water Resistance
• Always follow the water resistance rating listed by the manufacturer for your specific watch.
• Water resistance is not permanent and can decrease over time as seals and gaskets age.
• Make sure the crown is fully pushed in or screwed down before water exposure.
• Do not operate the crown, pushers, or other controls while the watch is underwater unless the manufacturer specifically states that it is safe to do so.
• Avoid hot tubs, saunas, and very hot showers, as heat and rapid temperature changes can affect the watch seals.
• Have the water resistance checked periodically, especially after battery replacement, case opening, or service.
Storage
• Store your watch in a clean, dry place when not in use.
• Keep it separated from other jewelry or watches to help prevent scratches.