Every reference with a known width takes the same strap size. Your reference is engraved on the case back or between the lugs at 6 o'clock.
20 mm
Verification: From our database, not yet verified
39 to 42 mm cases
Indicative information. Check your watch before buying a strap: whatsmylugwidth.com is not responsible for an incorrect size.
The Cartier Ballon Bleu takes a 20 mm strap: all 2 references with a listed width in our database use 20 mm. Check the reference on your case back to be sure.
Cartier Ballon Bleu references in our database. Each card says where its width comes from: listed by the maker (linked to the maker's page in the details), two independent sources agree, or listed in our database and not yet verified by us.
Ballon Bleu 28 Steel Silver Dial
Lug width: Integrated bracelet
Source: DatabaseCase size: 28 mmSilver dialCase material: Steel
Ballon Bleu 33 Pink Gold Diamonds
Lug width: Integrated bracelet
Source: DatabaseCase size: 33 mmSilver/ Diamonds dialCase material: Rose Gold
Ballon Bleu 33 Steel Silver Dial
Lug width: Integrated bracelet
Source: DatabaseCase size: 33 mmSilver dialCase material: Steel
Ballon Bleu 36 Pink Gold White Roman
Lug width: Integrated bracelet
Source: DatabaseCase size: 36 mmSilver dialCase material: Rose Gold
Ballon Bleu 36 Steel Silver Dial
Lug width: Integrated bracelet
Source: DatabaseCase size: 36 mmSilver dialCase material: Steel
Ballon Bleu 42 Pink Gold Chocolate Dial
Lug width: Integrated bracelet
Source: DatabaseCase size: 42 mmBrown dialCase material: Rose Gold
Ballon Bleu 42 Pink Gold Silver
Lug width: Integrated bracelet
Source: DatabaseCase size: 42 mmSilver dialCase material: Rose Gold
Ballon Bleu 42 Steel Black Dial
Lug width: Integrated bracelet
Source: DatabaseCase size: 42 mmBlack dialCase material: Steel
Ballon Bleu 42 Steel Blue Dial
Lug width: Integrated bracelet
Source: DatabaseCase size: 42 mmBlue dialCase material: Steel
Ballon Bleu 42 Steel Silver Dial
Lug width: Integrated bracelet
Source: DatabaseCase size: 42 mmSilver dialCase material: Steel
Ballon Bleu 42 Steel/Gold
Lug width: Integrated bracelet
Source: DatabaseCase size: 42 mmSilver dialCase material: Yellow Gold
Ballon Bleu Chronograph 44 Steel
Lug width: Integrated bracelet
Source: DatabaseCase size: 44 mmSilver dialCase material: Steel
Ballon Bleu Chronograph Blue
Lug width: Integrated bracelet
Source: DatabaseCase size: 44 mmBlue dialCase material: Steel
Ballon Bleu Flying Tourbillon
Lug width: 20 mm
Source: DatabaseCase size: 39 mmSilver dialCase material: Platinum
Ballon Bleu Skeleton Dial
Lug width: 20 mm
Source: DatabaseCase size: 42 mmSkeleton dialCase material: White Gold
Ballon Bleu XL 46 Steel Silver Dial
Lug width: Integrated bracelet
Source: DatabaseCase size: 46 mmSilver dialCase material: Steel
No reference matches.
The Cartier Ballon Bleu takes a 20 mm strap: all 2 references with a listed width in our database use 20 mm. Check the reference on your case back to be sure. These widths come from our database and are not yet verified.
From our database, which lists 16 Cartier Ballon Bleu references, 2 of them with a listed width. Each reference card says whether the maker lists the width, two independent sources agree on it, or it is not yet verified.
The gap between the two lugs that hold the strap, in millimetres. A new strap must match it exactly: 20 mm lugs take a 20 mm strap.
Most watches use spring bars, so any strap of the right width fits. Many smartwatches use their own band system instead, such as Apple Watch bands or Garmin QuickFit.