Amazfit Active 2 Watch Strap Size Guide

The Amazfit Active 2 takes a 20mm standard quick-release strap, so any well-made 20mm quick-release strap fits without an adapter. The costly mistake is assuming every Amazfit uses 20mm, because larger models such as the GTR line and Bip 6 use 22mm straps.

That difference matters. A spare strap from another Amazfit model can look nearly identical while being completely wrong at the lugs. The Active 2 has a compact 43.9mm case and a 20mm strap width, as listed by Amazfit's official product information, so shop by lug width first, then choose the strap length and closure that suit your wrist.

Table of Contents

• What Size Strap Does the Amazfit Active 2 Take?
• Why Your Other Amazfit Strap Probably Won't Fit
• How Do You Measure Lug Width and Wrist Size Yourself?
  • Measure the lug width first
  • Measure your wrist separately
• Do You Need an Adapter for 20mm Quick-Release Straps?
• Which Strap Material and Closure Suit Your Wrist and Routine?
• Why Won't My Strap Fit, and How Do I Fix It?
• Frequently Asked Questions
  • Can you make a 22mm strap fit a 20mm Amazfit Active 2?
  • Does the Amazfit Active 2 case diameter affect strap choice?
  • Does Nothing But Bands sell leather straps for the Amazfit Active 2?
  • Where should I start shopping for an Active 2 replacement?

What Size Strap Does the Amazfit Active 2 Take?

The Amazfit Active 2 takes a standard 20mm quick-release strap, and a compatible 20mm quick-release strap attaches without an adapter or proprietary connector. That's the only width you need to search for when buying an Active 2 replacement strap.

The expensive trap is the word “Amazfit.” 20mm isn't the universal Amazfit width. Larger watches in the GTR line and the Bip 6 use 22mm straps, so a spare strap from another Amazfit model will very likely be wrong for the Active 2. A 22mm strap forced into 20mm lugs won't seat cleanly. It binds at the lugs and can put unnecessary stress on the strap or spring bars.

Buying rule: Match the lug width first. Match strap length second. Don't choose a strap from the watch's case diameter or from the brand name alone.

The Active 2 uses a common quick-release format, which gives you a wide choice of sport silicone, nylon, Milanese mesh, and braided options. Amazfit's official strap sizing guide lists the Active 2 under its 20mm strap families, and the Active 2 product page publishes the wrist-fit ranges that go with them — 135–195mm for the silicone version and 150–210mm for the leather version.

For a straightforward starting point, browse Amazfit Active straps, but check the listing for 20mm quick-release before ordering. The rest of this guide covers how to verify the lug gap, avoid confusing width with wrist circumference, understand the quick-release pin, and choose the right closure for work, exercise, or swimming.

Why Your Other Amazfit Strap Probably Won't Fit

A strap made for another Amazfit watch may be the wrong size even when the attachment looks familiar. The Amazfit Active 2 uses 20mm, while larger models such as the 47mm GTR watches and the Bip 6 use 22mm. That two-millimetre difference is enough to stop a strap from fitting correctly.

The lugs are the two projections on the watch case that hold the spring bar. Their inside gap determines the strap width. A 20mm Active 2 leaves no spare room for a 22mm strap, so forcing a wider strap into the gap makes the strap material press against the lugs instead of sitting naturally between them.

That can create several problems:

• Binding: The strap edges catch against the lugs instead of dropping into place.
• Spring-bar stress: A forced fit can bend or compress the spring bar unevenly.
• Case scratches: Pushing metal hardware into a tight gap can mark the watch.
• False security: A strap that appears attached may not have both ends of the pin seated correctly.

The mistake isn't limited to GTR owners. Buyers often see “Amazfit compatible” in a listing and assume the strap will fit every model. That description is incomplete unless the listing also identifies the width and fitting. A strap can be genuine, well made, and still be incompatible with the Active 2 because it was built for 22mm lugs.

There's no good reason to blame a production batch when a strap won't go on. The lug gap is cut into the watch case by its tooling, and the published Active 2 specification is 20mm. If a strap refuses to seat, check which model the strap was sold for and measure the lug gap rather than assuming your watch is an unusual size.

If you own both watches, treat them as separate fitments: the watch lug width guide explains how to confirm the gap on any model, rather than trying to make a 22mm Bip 6 strap work on an Active 2.

How Do You Measure Lug Width and Wrist Size Yourself?

To confirm the Amazfit Active 2 watch strap size, release the strap and measure the gap between the inside faces of the two lugs. The Active 2 should measure 20mm, while your wrist circumference determines the strap length you need.

Measure the lug width first

Remove the existing strap before measuring. Use the quick-release tab to retract the spring-loaded pin, then slide the strap out of the lugs.

Place a steel ruler or caliper across the open gap between the inside faces of the lugs. Measure the gap, not the outside width of the watch case and not the width of the strap material. Amazfit lists the Active 2 as a 20mm quick-release model, so a correct measurement should align with that specification. Independent Active 2 sizing references make the same separation between the 20mm attachment width and the wrist-fit range.

Measure your wrist separately

Wrap a soft measuring tape around the part of your wrist where you wear the watch. If you don't have a tape, wrap a strip of paper around your wrist, mark where it overlaps, then measure the paper flat with a ruler.

That measurement selects strap length, not lug width. A wide case doesn't automatically require a wider strap, and the Active 2's 43.9mm case doesn't change its 20mm attachment standard.

Amazfit's published fit ranges show why material and length matter. A 140mm wrist sits inside the silicone range but below the leather minimum, while a 205mm wrist fits the leather range but exceeds the silicone range. Larger-wrist shoppers often need an extended-length replacement, and nylon loops tend to offer the most adjustment. Check the stated length range on the individual strap you are buying: it is a product-specific figure, not a universal length that every 20mm strap shares.

For a visual demonstration of the process, watch this guide before ordering:

Keep the two measurements written down separately. 20mm identifies compatibility. Wrist circumference identifies comfort and length. The guide to measuring watch strap size can help if your wrist measurement falls close to a strap's stated range.

Do You Need an Adapter for 20mm Quick-Release Straps?

No, the Amazfit Active 2 doesn't need an adapter for a compatible 20mm quick-release strap. The watch uses standard spring bars, and the quick-release pin lets you attach or remove the strap by hand.

A quick-release pin is a small spring-loaded bar built into the strap. Pull the tab to retract one end of the pin, place the other end into the lug hole, then release the tab so the pin seats on the opposite side. To remove the strap, pull the tab again and slide the strap free.

The process is simple, but check the seating before wearing the watch:

1. Insert one end: Place one end of the spring bar into its lug hole.
2. Retract the pin: Pull the quick-release tab while lowering the other end into position.
3. Release slowly: Let the pin expand into the second lug hole.
4. Check both sides: Tug the strap gently to confirm the pin is fully seated.

You don't need a spring-bar tool for a normal quick-release swap. That makes changing materials less frustrating and reduces the chance of dragging a metal tool across the case. It also means a universal 20mm quick-release strap can fit even when it isn't sold under the Amazfit name, because the width and fitting match.

Amazfit's own strap range maps multiple 20mm families to the Active 2, including Sport Silicone, Nylon, and Textured Silicone. That supports the practical conclusion that the Active 2 uses a standardized 20mm format rather than a brand-locked connector.

For a dressed-up option, the Solin Magnetic Milanese, Quick Release 20mm uses fine stainless-steel mesh and a magnetic clasp that closes anywhere along the strap. Its quick-release spring bars are designed for watches with 20mm lugs, so the fitting approach is the same as other compatible Active 2 straps.

Which Strap Material and Closure Suit Your Wrist and Routine?

Choose the closure based on how you wear the Amazfit Active 2, not just how the strap looks in a product photo. Magnetic Milanese suits work and evening wear, adjustable nylon loops suit changing wrist sizes during exercise, silicone suits sweat and swimming, and braided loops suit people who want a clasp-free fit.

A magnetic Milanese clasp slides anywhere along the mesh, so you can adjust the strap without relying on fixed holes. It's convenient for one-handed fitting and works well when you move between a desk and a dinner setting.

An adjustable nylon loop is the practical exercise choice. The Véllo Nylon Loop fine-tunes through the day rather than locking to fixed holes, and the Voren Nylon Loop uses a sliding G-hook clasp that holds through movement. That extra flexibility helps when your wrist changes slightly during the day.

For swimming and heavy sweat, choose silicone. The Vornis Silicone Sport Strap and Rovan Magnetic Silicone Sport Strap sit flat against the skin and are built to shrug off sweat, showers, and training. Nothing But Bands offers these options within its 20mm watch straps collection, alongside other universal 20mm formats.

A stretch-on braided loop is the simplest option if you dislike buckles altogether. The Mavric Braided Loop has no clasp, so you slide it over your hand and position the watch on your wrist. Measure carefully before choosing this style, because its comfort depends heavily on the relationship between wrist circumference and loop length.

The Vornis product review illustrates the fitting advantage without claiming the reviewer owns an Amazfit. Steven Hall wrote about the Vornis 20mm strap: “Really happy with this silicone sport strap! The light pink color is just perfect – soft and cute, goes well with pretty much anything I wear. The quality feels solid too; it's stretchy but not flimsy at all. Putting it on was a breeze, that quick release feature works like a charm.” You can see the Vornis Silicone Sport Strap, quick release 20mm if silicone matches your routine.

Why Won't My Strap Fit, and How Do I Fix It?

If the Amazfit Active 2 strap won't fit, check the model and lug width before blaming the watch. Most problems fall into a small number of clear categories.

• Strap won't seat at the lugs: The likely cause is a 22mm strap sold for a larger GTR model or the Bip 6. Check the product listing, measure the open lug gap, and replace it with a 20mm quick-release strap.
• Strap attaches but feels too tight or loose: The width is probably correct, but the strap length isn't. Measure wrist circumference and choose a suitable length, or look for an extended-length nylon option if standard straps are too short.
• Case diameter is causing confusion: The Active 2's 43.9mm case doesn't determine the strap width. Ignore the case measurement when shopping and use the 20mm lug specification.
• One lug feels loose: The quick-release pin may not be fully seated. Remove the strap, inspect the pin, reinstall it carefully, and tug both sides before wearing the watch.
• Spring bar won't click into place: Check that the strap contains the correct quick-release pin and that the pin isn't bent or worn. Don't force a misaligned bar into the case.

A strap that needs force is the wrong strap. Remove it, confirm the listing, and measure the lugs rather than trying to stretch or compress the strap hardware.

Frequently Asked Questions

Can you make a 22mm strap fit a 20mm Amazfit Active 2?

No. A 22mm strap won't correctly fit the Amazfit Active 2, because it binds at the 20mm lugs. Return or replace it instead of forcing the strap into position.

Does the Amazfit Active 2 case diameter affect strap choice?

No. The 43.9mm case diameter doesn't determine strap size. Choose the 20mm lug width, then use wrist circumference to select strap length.

Does Nothing But Bands sell leather straps for the Amazfit Active 2?

No. Nothing But Bands ' genuine leather straps use brand-specific fittings for Fitbit, Apple Watch, Garmin QuickFit, and Galaxy Watch, and none fits an Amazfit. Silicone, nylon, Milanese, and braided 20mm options are the honest choices for the Active 2.

Where should I start shopping for an Active 2 replacement?

Start with quick-release watch straps, filter for 20mm, and confirm the strap length against your wrist measurement. Nothing But Bands sells replacement straps, not watches, and its universal 20mm quick-release range fits the Active 2 because the width and fitting match.

Nothing But Bands offers universal 20mm quick-release replacement straps for the Amazfit Active 2, including silicone, nylon, Milanese, and braided styles, but no leather option that fits Amazfit. Visit Nothing But Bands to choose a 20mm strap, check the wrist-length details, and make the swap without an adapter.