Clifton 10870, Automatic Date Display Watch 39mm
The Clifton 10870, powered by the prestigious Baumatic manufacture movement (BM13-1975 A), joins the collection in a 39 mm format. Produced as a limited edition, its exclusive design is highlighted by a guilloché dial in a glacier-blue color, a subtle new hue that emphasises the heritage of the collection. The sunburst minute track showcases the Arabic numeral located at 12 o’clock, as well as the rhodium-plated faceted trapezoid indexes and alpha-style hands. The three-row strap in satin-polished steel is interchangeable without the use of tools thanks to a reliable system.
Origin: Switzerland
Water Resistance: 50 meters / 5 ATM
Movement Type: Automatic
Power Reserve: 120 hours
Watch Function: Time, Date
Case Shape: Round
Case Size: 39mm
Case Thickness: 11.22mm
Case back: Sapphire crystal case back, With screw
Dial Colour & Finish: Blue, Stamped
Strap Material: Steel, Polished/satin-finished
Measure your ring size at home in minutes with our printable ring sizer and conversion chart.
How to measure your ring size
A good fit is snug enough to stay put, loose enough to slide over your knuckle. Print our ring sizer on A4 paper at 100% scale (no "fit to page") and check the 5cm line with a ruler, then choose a method below.
Download printable ring sizerUse a ring you already own
Easiest if you have a ring that fits the finger you're shopping for.
- Place your ring over the printed circles, starting with the smallest.
- Stop when the circle's outline sits just inside the ring's inner edge.
- That circle is your size.
Use the ring sizer strip
No ring to measure? The paper strip works just as well.
- Cut out the strip along the dashed line, then cut the slit.
- Wrap it around the base of your finger, printed side out.
- Feed the narrow end through the slit until it feels snug.
- Read the size where the strip meets the slit.
Between sizes? Choose the larger size.
Best time to measure: at the end of the day, when fingers are warm. Cold fingers read smaller.
Wide band? Bands 6mm and wider fit tighter, so consider going up half a size.
Ring size conversion chart
| AU / UK | US | EU | Inner diameter | Circumference |
|---|---|---|---|---|
| I | 4½ | 48 | 15.3mm | 48.0mm |
| J | 5 | 49 | 15.7mm | 49.3mm |
| K | 5½ | 50 | 16.1mm | 50.6mm |
| L | 6 | 52 | 16.5mm | 51.9mm |
| M | 6½ | 53 | 16.9mm | 53.1mm |
| N | 7 | 54 | 17.3mm | 54.4mm |
| O | 7½ | 56 | 17.7mm | 55.7mm |
| P | 8 | 57 | 18.1mm | 57.0mm |
| Q | 8½ | 58 | 18.5mm | 58.3mm |
| R | 9 | 60 | 18.9mm | 59.5mm |
| S | 9½ | 61 | 19.4mm | 60.8mm |
| T | 10 | 62 | 19.8mm | 62.1mm |
| U | 10½ | 63 | 20.2mm | 63.4mm |
| V | 11 | 65 | 20.6mm | 64.6mm |
The most common women's ring sizes in Australia are N–P (EU 54–57). Sizing can vary slightly between brands, so check the size details on each product page.
Still not sure?
Our team is happy to help you find the right fit. Contact us or read our FAQs. If something doesn't fit, you're covered by our 30-day returns.
Swiss Made
5-Day Power Reserve
24-month Warranty
Since 1830
SKU: M0A10870
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