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Apple 40mm Chalk Calm Nike Sport Loop

UK MKU64ZM/A · 40mm Chalk Calm Nike Sport Loop

Manufacturer-listed compatible models
Apple Watch Models: 38mm, 40mm, 41mm
Manufacturer wrist fit and selected size
Strap fits 130-190mm wrists.
Manufacturer material specification
80% recycled nylon

Apple accessory in the exact UK configuration identified by MKU64ZM/A.

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THE ACTUAL PRODUCT
Nike Sport Loop band, chalk calm colour (creamy white with yellow details, light grey edges and subtle woven pattern), double-layer nylon weave material, hook-and-loop closure, Nike Run Swoosh logo pull-tab
Official product image · Image source detailsProduct imagery does not establish a retailer’s bundle or condition.
Compare with Apple 42mm Green Spark Nike Sport Loop
Explore alternativesUpgrade from this product

Specifications checked 19 Oct 2026Manufacturer specifications, not a hands-on test.

Options worth comparing

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The nearest checked watch bands by key specifications, with what differs from the Apple 40mm Chalk Calm Nike Sport Loop. The first matches the Compare button above.

The useful part.

Key strengths

The official manufacturer page identifies this exact part and its supplied configuration.

Manufacturer source
The checks that matter.

Before you buy

Compatibility and charging or interface features retain their manufacturer conditions. Unlisted facts remain unknown; no retailer price or stock is established.

Manufacturer source
Every specification. With its source.

Full specifications

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Exact configuration: UK MKU64ZM/A · 40mm Chalk Calm Nike Sport Loop

5 specifications in 3 groups. Values are manufacturer specifications unless a row says “Measured result” or “Calculated from cited specifications”.

Connections & compatibility

1 item
Manufacturer-listed compatible models
Apple Watch Models: 38mm, 40mm, 41mm

The official model list is retained by host group. It does not establish every feature on every host; read the separate system requirements and charging or interface conditions.

Source

Materials, size & fit

3 items
Manufacturer wrist fit and selected size
Strap fits 130-190mm wrists.

Fit applies to the selected exact part: 40mm Chalk Calm Nike Sport Loop. Nominal watch-case sizes are not wrist circumferences. A manufacturer size number is not converted to a wrist measurement.

Source
Manufacturer material specification
80% recycled nylonSource
Accessory type and selected configuration
40mm Chalk Calm Nike Sport LoopSource

Supplied items

1 item
Supplied items
Apple Watch Nike Sport LoopSource
Similar products.

Compare with another watch band

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Nike Sport Loop band, essential white colour (light grey with dark grey details, bright green edges and subtle woven pattern), double-layer nylon weave material, hook-and-loop closure, Nike Run Swoosh logo pull-tabApple 40mm Essential White Nike Sport LoopUK MKU84ZM/A · 40mm Essential White Nike Sport LoopCompare the two Nike Sport Loop band, chalk calm colour (creamy white with yellow details, light grey edges and subtle woven pattern), double-layer nylon weave material, hook-and-loop closure, Nike Run Swoosh logo pull-tabApple 42mm Chalk Calm Nike Sport LoopUK MKUE4ZM/A · 42mm Chalk Calm Nike Sport LoopCompare the two Nike Sport Loop band, after dark black colour (black with grey details and subtle woven pattern), double-layer nylon weave material, hook-and-loop closure, Nike Run Swoosh logo pull-tabApple 40mm After Dark Black Nike Sport LoopUK MKU34ZM/A · 40mm After Dark Black Nike Sport LoopCompare the two Nike Sport Loop band, pavement grey colour (dark grey with red details, light grey edges and subtle woven pattern), double-layer nylon weave material, hook-and-loop closure, Nike Run Swoosh logo pull-tabApple 42mm Pavement Grey Nike Sport LoopUK MKUF4ZM/A · 42mm Pavement Grey Nike Sport LoopCompare the two Nike Sport Loop band, pavement grey colour (dark grey with red details, light grey edges and subtle woven pattern), double-layer nylon weave material, hook-and-loop closure, Nike Run Swoosh logo pull-tabApple 40mm Pavement Grey Nike Sport LoopUK MKU74ZM/A · 40mm Pavement Grey Nike Sport LoopCompare the two Nike Sport Loop band, green spark colour (mint green with medium green details and subtle woven pattern), double-layer nylon weave material, hook-and-loop closure, Nike Run Swoosh logo pull-tabApple 40mm Green Spark Nike Sport LoopUK MKU94ZM/A · 40mm Green Spark Nike Sport LoopCompare the two Nike Sport Loop band, green spark colour (mint green with medium green details and subtle woven pattern), double-layer nylon weave material, hook-and-loop closure, Nike Run Swoosh logo pull-tabApple 46mm Green Spark Nike Sport LoopUK MKV34ZM/A · 46mm Green Spark Nike Sport LoopCompare the two Nike Sport Loop band, after dark black colour (black with grey details and subtle woven pattern), double-layer nylon weave material, hook-and-loop closure, Nike Run Swoosh logo pull-tabApple 46mm After Dark Black Nike Sport LoopUK MKUW4ZM/A · 46mm After Dark Black Nike Sport LoopCompare the two
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