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The Bulgari Octo Finissimo Skeleton 8 Days is a manually wound, ultra-thin watch powered by the manufacture BVL 199 SK caliber. Bulgari specifies an eight-day (192-hour) power reserve and a 2.50 mm movement; the two surfaced references, black 104121 and grey 103610, share a 40 mm case, 5.95 mm case thickness and water resistance up to 30 metres.
What the Octo Finissimo Skeleton 8 Days is
Bulgari describes this model as a skeleton watch built around a hand-wound, ultra-thin manufacture movement in its octagonal Octo Finissimo case. Its openwork construction exposes parts of the movement through the dial. Bulgari’s description is manufacturer language, not an independent assessment of performance.
The caliber is BVL 199 SK. Bulgari specifies manual winding, an eight-day (192-hour) power reserve and a movement thickness of 2.50 mm. For reference 104121, the US product page also lists a frequency of 21,600 vibrations per hour (3 Hz).
How references 104121 and 103610 differ
The surfaced official versions share the main dimensions and movement specifications, but differ in case finish, bracelet and buckle. Their displayed prices also reflect different regional pages and tax treatment.
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- 【Hollow Skeleton Design】 Luxury skeleton hollow-out design allows you to have a beautiful vintage watch with the appearance of a mechanical watch, but you don't need to wind it up every day like a mechanical watch.
- 【Novel Style】 The unique long barrel shape surface is distinguished from the square round watches on the market. The front and back sides have gorgeous gear carving design. There are 4 different color cases to choose from, and the steel belt and belt are matched at the same time. A total of 9 colors are optional.
- 【Comfortable to Wear】 Durable leather strap is easy to adjust the length; The buckle of the stainless steel watch strap is a hidden button buckle, which is more convenient to wear and remove. The luminous pointer lets you see the time of the night.
- 【Good Quality】 The high-strength mineral glass on the case provides scratch protection. High quality case, not easy to fade. Waterproof to 30 meters (only for domestic waterproof, i.e. splash-proof and sweat-proof, not for bathing and diving)
- 【Exquisite Gift】 This fashionable hollowed-out skeleton watch is suitable for any casual or formal occasion. Its elegant appearance is easy to match with any men's clothing, making your wrist the focus. Unique design, exquisite craftsmanship, luxurious appearance and exquisite packaging are perfect gifts for holidays, Thanksgiving, Christmas, graduation, Father's Day and birthday.
| Specification | Reference 104121 | Reference 103610 |
|---|---|---|
| Case | 40 mm titanium with black DLC coating | 40 mm grey titanium |
| Movement appearance | Black PVD skeletonized bridges; openwork dial; rose-gold-plated hands and indexes | Grey titanium version; further dial and hand details not stated on the cited UK page |
| Bracelet and buckle | Black rubber bracelet; black DLC-coated titanium pin buckle | Titanium bracelet; three-blade folding buckle |
| Case thickness | 5.95 mm | 5.95 mm |
| Movement | Manual-winding BVL 199 SK; 8-day (192-hour) reserve; 21,600 vph (3 Hz) | Manual-winding BVL 199 SK; 8-day (192-hour) reserve |
| Water resistance | Up to 30 metres | Up to 30 metres |
| Displayed regional price | $26,300 on Bulgari’s US page, excluding taxes when observed on 2026-10-08 | £26,200 on Bulgari’s UK page, including taxes when observed on 2026-10-08 |
For the black reference, see Bulgari’s US product page for reference 104121. For the grey reference, see Bulgari’s UK product page for reference 103610. The cited pages are regional listings; verify the current price, tax treatment and availability for your location directly with Bulgari.
Choosing between the black and grey versions
The clearest distinction is the look and bracelet: 104121 pairs a dark DLC-coated case with black rubber, while 103610 is an all-titanium option with a titanium bracelet. The black version has a pin buckle; the grey version has a three-blade folding buckle. The specifications cited here do not establish that either is more comfortable, legible, durable or accurate, so those preferences are best assessed in person or with a seller’s confirmed details.
Rank #2
- ⌚Innovative Skeleton Tonneau Design: The tonneau-shaped dial, integrated with a double-sided skeletonized structure, transforms the complete mechanism of the movement into a piece of suspended art on the wrist, vividly revealing the inner workings of the caliber. The front displays the gear train transmission, while the back showcases the automatic winding mechanism.
- ⌚Fully Automatic Mechanical Movement: The movement is equipped with an efficient automatic winding system, ensuring precise timing. Through the natural swing of the wrist during daily wear, it drives the internal pendulum to rotate and continuously convert kinetic energy into the power of the mainspring.
- ⌚Silicone Strap: This mechanical watch comes with a silicone strap that can be worn all year round, without the stuffiness of wearing a strap in summer or the coldness of wearing a stainless steel strap in winter, providing you with a comfortable wearing experience in any season.
- ⌚Waterproof/Luminous Function: The watch has 3ATM waterproof ability, effectively resisting splashes during hand washing, sudden rainfall, and sweat during exercise in daily life. At the same time, the hands are coated with a long-lasting luminous coating, which can store energy in sunlight or light and release clear and soft green light in dark environments for easy reading.
- ⌚OLEVS Warranty Service: We provide a 2-year product quality guarantee for OLEVS watches. If you encounter problems while using your watch, please feel free to contact us. We will provide you with professional services!
What the published specifications do—and do not—tell you
Bulgari lists water resistance up to 30 metres for both references. That is the stated rating; it is not evidence of suitability for a particular water activity. Follow Bulgari’s guidance for use and care rather than inferring practical limits from the number alone.
The available official product information establishes the listed specifications and regional price observations, but not independent accuracy testing, long-term wear results, service costs, resale values or current stock across retailers. Those claims require separate, model-specific evidence.
Rank #3
- Mens wrist watch is designed with luxurious skeleton, just like a delicate collection. The moon phase dial matches well with the gold tourbillon. Fashion watches are not only suitable for daily wear but also pleasing to the eye.
- High quality import original automatic mechanical movement, no battery, can be manual and self-winding. The smooth silver case and pointer time mark show the taste of mature men.
- The soft black leather strap has been pressed and waxed layer by layer to keep its luster. The watch weighs nearly 2.4oz (68g), creating a more lightweight wearing feeling and excellent comfort for you.
- 164FT (50M) waterproof function and luminous pointer, splashproof and rainproof. Simple functions can meet your daily wear or outdoor sports.
- OLEVS Men's Watches: This store offers 60 days free returns and a 2-year product warranty, extended to after Christmas, so there is no need to worry about damaged goods that cannot be returned for a refund. Package includes watch/gift box/free adjustment tool/user guide. If you encounter problems while using the watch, you can contact us through Amazon and a professional after-sales team will provide you with services.
Checking price and availability
The observed prices are not universal quotes: Bulgari’s US page showed $26,300 excluding taxes for 104121, while its UK page showed £26,200 including taxes for 103610. Bulgari’s grey-reference page in another region showed €30,300 including taxes, and the US page showed $28,500 for 103610. These are page observations from 2026-10-08, not guaranteed current prices. Check the relevant local Bulgari listing for today’s price, tax inclusion and availability.
If considering a marketplace listing, confirm the exact reference, seller, condition and return terms before purchase. The official product pages establish that these references exist; they do not establish current Amazon inventory, seller authorization or affiliate-program participation.
Quick Recap
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.
