



Alpina Alpiner Extreme Skeleton 40mm AL-520NSKT3AE6
4 interest free payments of $1,559.25
The Alpina Alpiner Extreme Skeleton Automatic AL-520NSKT3AE6 is a men's Swiss automatic sports watch that strips the dial away and lets the mechanism do the talking. The compact cushion-shaped case measures 39 x 40.5mm and sits just 11.5mm tall, machined from 316L stainless steel with the Alpiner Extreme's signature integrated look.
Behind the open-worked blue dial, the partially skeletonised calibre is on full display through a matt-and-transparent finish that shifts with the light. A blue rubber strap on a push-button folding buckle keeps the whole thing secure and low-profile on the wrist, whether that wrist is at a desk or on a boat.
Inside is Alpina's AL-520 Skeleton automatic movement, built on the Swiss-made Sellita SW200 base, beating at 28,800 vibrations per hour with 26 jewels and a 38-hour power reserve. It is rated to 20 ATM, making this a 200m water resistant skeleton watch — a rare combination, as most open-dial pieces trade toughness for theatre.
Alpina has been building watches for the mountains since 1883, and the Extreme line carries that Alpine sports heritage into a 39mm stainless steel automatic that works as a weekend diver, a travel watch and a conversation piece in equal measure. For the buyer who wants a Swiss skeleton watch under 40mm that can actually take a knock, this is the one.
What we love about this watch: The Extreme Skeleton AL-520NSKT3AE6 solves a problem most skeleton watches ignore — it is properly wearable. Under 40mm, under 12mm thick, 200m water resistant and on rubber, it delivers all the mechanical drama of an open dial without the fragility or the oversized case. The navy blue execution is the more versatile of the two references, and the compact cushion case wears smaller and sharper than the numbers suggest.
Ships in 1-3 Business Days from Sydney with Australia Post Express. Sydney customers can pick up on the same day from our Alexandria showroom an hour after placing the order by choosing Click & Collect as the delivery option.
2 year Australian warranty from Alpina. StarBuy are Authorised online stockists of Alpina Swiss Watches. All Alpina Watches are shipped with a manufacturers warranty and in Alpina official packaging.
Specification
Case
- Case Diameter (mm) 39mm
- Case Thickness (mm) 10mm
- Lug-to-Lug (mm) 40.4mm
- Lug Width (mm) 15mm
- Case Material Stainless Steel
- Case Shape Cushion
- Case Back Type See Through Case Back
- Glass Type Sapphire Crystal
- AR Coating Anti-Reflective Coating on Sapphire Crystal
- Water Resistance (m) 200
- Bezel Material Stainless Steel
- Bezel Type Fixed Bezel
Bracelet / Strap
- Material Rubber
- Type Rubber Strap
- Interchangeable? Yes
- Clasp Pin Clasp
- Clasp Type Tang Clasp
Dial
- Colour Gray
- Finish Skeleton Dial
- Indices Type Batons
Delivery
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How and when will my StarBuy order be shipped?
We ship all orders via Australia Post Express for fast and reliable delivery. We aim to dispatch every order as quickly as possible—typically within 1–3 business days. You'll receive a confirmation email with tracking details as soon as your order ships. -
Can StarBuy guarantee delivery dates?
While Australia Post Express is generally reliable, their delivery dates are estimates only and may vary, especially during busy periods. We appreciate your understanding if your parcel takes a little longer to arrive. -
Will I need to sign for my order?
Yes, a signature is required upon delivery. If no one is home, we recommend using a work address. Australia Post may offer contactless delivery—in those cases, we follow their current safety protocols. Risk and ownership transfer to the recipient upon delivery. -
What if I am not home when my order arrives?
If no one is available to sign, Australia Post will leave a card with details on how to collect your parcel from the closest authorised Australia Post Office. You’ll need to present a photo ID at the post office to pick it up. If you’ve authorised a Safe Drop with Australia Post previously, they’ll follow your existing instructions. -
Will I get a Shipping Notification?
Absolutely! As soon as your order is on its way, you’ll receive an email with tracking details. We kindly ask for your patience—tracking updates may take up to 3 business days after ordering. -
What are your shipping charges?
We offer free shipping Australia-wide with Australia Post Express. For approved brands shipped to New Zealand, a $10 flat fee will be added to your total at checkout. Approved parcels to NZ are shipped within the Australia Post / NZ Post network. -
Click & Collect?
Prefer a quicker pick-up? Our Click & Collect service makes it easy.
Pickup Location:
StarBuy
Suite 23, 112 McEvoy Street
Alexandria NSW 2015Hours:
Monday–Friday: 10am–5pm
Saturday: 9am–12pmHow it works - Your order will be ready for pickup within an hour during business hours (unless otherwise notified). If someone else is collecting on your behalf, just email us their name—they’ll need to show ID at pickup.
FAQ
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Are all items in stock?
StarBuy products for sale on the website are always live and accurate. All items marked ‘In Stock’ are physically in stock with us. Items marked ‘Out of Stock’ are completely sold out. In rare instances where additional items are ordered and the items are being shipped to StarBuy, a specific note will be made on the product page.
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How can I be sure your products are authentic?
We guarantee that all of the products we sell on StarBuy- Are brand new
- Are 100% genuine - manufactured by the named brands, in keeping with their high quality standards.
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Is a tax invoice included with my order?
All orders have an automated invoice emailed to the email address on the order. All items listed on our website are GST inclusive. The invoice clearly shows the GST charged on the purchase as well as our name and ABN number.
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Can an item be reserved or put on hold?
Unfortunately due to the model adopted by StarBuy, we are unable to reserve or put an item on hold. Items on sale are limited in quantity and often sell out quickly.
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Why are StarBuy prices low?
StarBuy is a low cost discount website that buys items in bulk and offers them at the lowest possible prices. We keep our costs low by automating most back office processes to keep our prices world competitive. We ensure that you benefit by buying quality brands at low prices from StarBuy and come back to save money again and again.
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4 interest free payments of $1,559.25
Specifications
- Case Diameter (mm) 39mm
- Case Thickness (mm) 10mm
- Lug-to-Lug (mm) 40.4mm
- Lug Width (mm) 15mm
- Case Material Stainless Steel
- Case Shape Cushion
- Case Back Type See Through Case Back
- Glass Type Sapphire Crystal
- AR Coating Anti-Reflective Coating on Sapphire Crystal
- Water Resistance (m) 200
- Bezel Material Stainless Steel
- Bezel Type Fixed Bezel
- Material Rubber
- Type Rubber Strap
- Interchangeable? Yes
- Clasp Pin Clasp
- Clasp Type Tang Clasp
- Colour Gray
- Finish Skeleton Dial
- Indices Type Batons
- Type Automatic
- Calibre AL-520 SKELETON (Base SW200)
- Beat Rate (vph) 28800 vph
- Jewels 26
- Movement Hacking? Yes
- Hand Winding? Yes
- Self Winding? Yes
- Power Reserve (days) 1.58 days
- Accuracy ±15 Seconds per Day
- Reference AL-520NSKT3AE6
- GTIN 7630428491666
- Display Analog
- Gender Male
- Age Group Adults
- Weight (g) 110g (Approximate)
- Shipping Period 1-3 Business Days - Sydney
- Brand Alpina
- Authorised Dealer Yes
- Warranty Period ALPINA 2 Year
- Warranty Registration Online by Starbuy
- Warranty Provider Citizen Watches Australia
- Packaging Alpina Official Packaging
- Manual Alpina Online
- Service Centre Alpina - Sydney
Reviews
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Frequently Asked Questions
Is the Alpina Alpiner Extreme Skeleton AL-520NSKT3AE6 water resistant enough to swim with?
Yes. The AL-520NSKT3AE6 is rated to 20 ATM, which is 200 metres of water resistance, so it is suitable for swimming and recreational diving. Paired with the blue rubber strap, it is built for the water as much as for the mountains.
What movement is in the Alpina Extreme Skeleton, and is it Swiss made?
It uses the Alpina AL-520 Skeleton automatic calibre, which is based on the Swiss Sellita SW200. It runs at 28,800 vibrations per hour, has 26 jewels and delivers a 38-hour power reserve. The movement is self-winding, so daily wear keeps it running with no battery.
What size is the Alpina Alpiner Extreme Skeleton and how does it wear?
The cushion case measures 39 x 40.5mm and is 11.5mm thick. The cushion shape and integrated rubber strap mean it wears compact and flat, so it suits small to medium wrists comfortably and slides under a shirt cuff without fuss.