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Tornado AUTONOVA Blue Silver: What the 8N24 Skeleton Watch Offers

A specification-led look at Tornado’s 41 mm AUTONOVA automatic skeleton watch, including what its MIYOTA 8N24 movement and listed features do—and do not—establish.
Estimate3–4 min Catalogued SpecialistWatchRanker Team
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The Tornado AUTONOVA Automatic Blue Silver (SKU T24303-SBSN) is a 41 mm automatic skeleton watch with a MIYOTA 8N24 movement, stainless-steel bracelet and seller-listed 10 ATM water resistance. Tornado’s specifications make it a feature-rich design on paper; they do not establish how comfortable, legible, accurate or durable the finished watch is in everyday use.

What Tornado lists for the AUTONOVA

Tornado’s US product listing describes a brushed 316L stainless-steel case measuring 41 mm across and 10 mm thick. The case is round, with an octagonal bezel, and frames a blue skeleton dial. The bracelet is integrated solid stainless steel, tapering from 27 mm to 18 mm, and closes with a double-pusher butterfly clasp. Tornado specifies sapphire-coated glass—not solid sapphire crystal—and a three-year international warranty. Tornado’s product listing

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Specification Published detail
Model and SKU AUTONOVA Automatic Blue Silver, T24303-SBSN
Case 41 mm brushed 316L stainless steel; 10 mm thick
Bezel and dial Octagonal bezel; blue skeleton dial
Movement MIYOTA 8N24 automatic
Glass Sapphire-coated glass
Bracelet and clasp Integrated solid stainless steel; 27 mm to 18 mm taper; double-pusher butterfly clasp
Water resistance 10 ATM, as listed by Tornado
Warranty Three-year international warranty, as listed by Tornado

What the MIYOTA 8N24 specification means

MIYOTA identifies the 8N24 as a skeleton mechanical movement. Its published specifications include automatic and hand winding, three hands, a stop-seconds device and approximately 42 hours of running time. MIYOTA describes it as a “Skeleton mechanical movement which makes it possible to appreciate the movement’s beauty and distinctive motions.” MIYOTA 8N24 specifications MIYOTA movement description

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The caliber’s stated accuracy range is -20 to +40 seconds per day. That is a movement specification, not a measurement of this individual Tornado watch. The available product information does not report a timing test of the assembled watch.

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What can—and cannot—be concluded from the specifications

Design and wearing experience

The listed dimensions and integrated bracelet outline the watch’s proportions, but do not tell you how it sits on your wrist. The product information does not establish comfort, bracelet adjustment range, finishing quality or how easily the dial can be read. Those questions require an in-person assessment or a reliable hands-on account.

Glass and water resistance

Keep Tornado’s exact phrase, “sapphire-coated glass,” in mind when evaluating the listing: it does not state that the watch has a solid sapphire crystal. Likewise, 10 ATM is the seller-listed rating. The product page does not provide model-specific guidance for swimming, diving or other water use, so the rating alone is not enough to make a more specific recommendation.

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Reliability over time

A three-year international warranty is part of Tornado’s listing, but the cited product information does not spell out coverage conditions or establish long-term reliability. Check the warranty terms for your region before buying.

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Price and availability depend on the market

At the time of the cited Tornado US listing, the watch was shown at $309, reduced from a struck-through $325, with delivery across the USA stated as 3–5 business days. These are storefront details, not fixed or universal terms. Check the relevant regional listing for current price, stock, shipping and warranty coverage. Tornado US product listing

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Who should consider it?

The AUTONOVA is worth a closer look if you want a skeleton-style automatic with a named MIYOTA caliber, a steel bracelet and published case dimensions. The 8N24’s hand-winding and stop-seconds features, along with its approximately 42-hour stated running time, are useful points to weigh against your needs. If your decision depends on verified wrist comfort, legibility, measured accuracy, solid-sapphire glass or a specific water-use capability, the cited specifications do not settle those questions.

Before purchasing, confirm the exact reference, T24303-SBSN, and compare the current regional price and warranty terms. For a fair comparison with another watch, use like-for-like details: case diameter and thickness, movement features and stated running time, crystal wording, bracelet fit and adjustment, water-resistance rating and warranty.

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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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