Effervo Silicone Magnetic Band - Astra Straps

Effervo Silicone Magnetic Band

Name: Effervo Silicone Magnetic Band
Brand: Astra Straps AUS
SKU: DP2404031S01&DP20630709
Price: 34.99 USD
Availability: InStock

4.77 (31 reviews)

$34.99

$69.99 $34.99 Save $35.00

In Stock - Fast Shipping With USPS

Band Color: Black Gray

Black Gray Variant sold out or unavailable
Cloud Gray Variant sold out or unavailable
Blue Midnight Variant sold out or unavailable
Orange Midnight Variant sold out or unavailable

Band Width: 38MM / 40MM / 41MM / 42MM-S10/S11/S12

38MM / 40MM / 41MM / 42MM-S10/S11/S12 42MM / 44MM / 45MM / 46MM / 49MM

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Free Shipping Orders $50+
Easy Returns
100 Days Guarantee

Less than 0.5% of buyers use our money-back guarantee

This is the kind of band you put on once and forget about, until someone compliments it. The Effervo Silicone Magnetic Band delivers a smooth, modern look that feels as effortless as it appears.

Whether you are working at your desk, out running errands, or dressing up for dinner, this band moves with you and makes sure your Apple Watch always looks right at home.

Features:

Seamlessly Connected for a smooth, clean silhouette

Dual-Color Finish adds understated style

Strong Magnetic Clasp for a secure, adjustable fit

Soft And Flexible Silicone for everyday comfort

Easy To Clean And Care For

Resistant To Daily Wear And Minor Abrasions

Ideal For Both Active And Casual Routines

Available In 4 Versatile Colors to match your aesthetic and personality

Details & Compatibility

Fits Wrist Size:
- 38MM / 40MM / 41MM / 42MM-S10/S11/S12: 5.5" - 7.5"
- 42MM / 44MM / 45MM / 46MM / 49MM: 5.9" - 8.2"

Compatible with: Apple Watch Series 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, SE, SE 2, SE 3, Ultra, Ultra 2, Ultra 3 and Ultra 4

Shipping and returns

Shipping

We offer FREE Tracked shipping on all orders over $50! For orders under $50 we charge $4.95. 📦

We offer Shipping to Canada, United Kingdom, Australia and New Zealand.

We process orders between Monday and Friday. Please note that we require 2 to 3 working days on average to fulfill your order before dispatching it. Rest-assured we are doing everything in our power to get your order to you as soon as possible!

Once your order is dispatched, depending on your country or region, estimated delivery time is between 5 to 10 business days. Please consider any holidays or global events that might impact delivery times.

Returns

We offer hassle-free returns to our nearest dispatch center. To start a return just contact our support team at support@astrastraps.com and we will make the process easy and effortless.

PLEASE NOTE: Due to delays caused by huge pressure on international and local shipping companies, orders may be delayed for arrival.

Our guarantee

The Astra Standard

Engineered for quality. Protected by our guarantee.

Premium Build

Rigorous QC checks ensure every strap meets the highest tier of durability.

100-Days Guarantee

Full coverage against defects, Faults.

Insured Shipping

Free tracked shipping over $50. We cover any loss in transit.

Specifications

Closure TypeMagnetic

Band Length100mm+115mm / 115mm+125mm

Weight30g

Size guide

At Astra Straps, all our bands have clear and specific sizes indicated. Please check the sizing guide below before ordering. If you are still unsure, you may contact us here.

1. How do I know my wrist size?

Simply use a flexible measuring tape to wrap around your wrist and record the measurement on the tape that overlaps the zero end of the tape OR just grab any string/paper strips to do the same, then lay the string on a ruler to get your accurate wrist size.

In most cases, knowing your wrist size/length will be sufficient. Check your wrist size against the size of the strap that you wish to purchase on the individual product details page.

From there, you can select and purchase our watch straps: Small (S), Large (L) or Free Size.

2. What is the watch band width / watch lug measurement?

In certain cases, knowing your wrist size alone may not be sufficient. In such a scenario, you will need the watches' band width size, also know as the watch lug width size.

Your Apple watch will say the measurement on the back.

If you cant find the size on the back place the watch with the watch face facing up. Take the measurement of the distance between the lugs (where the watch strap fits).

For Apple Watches the you have the choice between 38MM, 40MM, 41MM, 42MM, 44MM, 45MM & 49MM, you can also enter your watch model number into a search engine to find what size your watch uses.

Apple Watch 7, 8, and 9: The Apple Watch Series 7, 8, and the newly released Series 9 are compatible with a wide range of our bands, including sizes 38MM, 40MM, 41MM, 42MM, 44MM, 45MM, and 49MM. For watch cases, they fit the 41MM and 45MM sizes.

Apple Watch Ultra and Ultra 2: The recently introduced Apple Watch Ultra and Ultra 2 are compatible with 45MM and 49MM bands. As for the watch cases, both the Ultra and Ultra 2 models are available in a 49MM size.

Using these three measurements, you are now ready to grab your band!

Ask a question

View full details

Will this actually fit my watch?

Absolutely! Whether you’re rocking the original Series 1 or the latest model, we’ve got you covered. Just check the size on the back of your watch (if you're not sure), and we'll handle the rest. It’s that easy.

Are third-party Apple Watch Bands safe to use?

Yes. All Astra Straps use precision-machined stainless steel connectors that lock securely into your Apple Watch — the same mechanism Apple uses. They won't scratch your watch or interfere with sensors like heart rate or blood oxygen. All our materials are skin-safe and nickel-free, and using a Astra Straps band does not void your Apple Watch warranty.

What makes Astra Straps different?

Great question! At Astra Straps, we don’t just make bands – we craft them.

Every single band is hand-finished to ensure the highest quality and attention to detail. We’re all about combining top-notch materials with unique designs that reflect your personal style.

Plus, we test every band for comfort and durability, so you can count on a strap that’s as strong as it is stylish. When you choose Astra Straps, you’re not just getting a band – you’re getting a piece of wearable art.

What if I don’t love it?

We get it – sometimes things just don’t work out. If you’re not in love within 100 days, send it back, no questions asked. We’ll refund you, no drama. We want you to have a band you absolutely love.

When will it get here?

We’re all about speed. Most orders ship within 1-2 days, and you can expect it to arrive shortly after.

Plus, if you spend over $50, shipping is on us. Because let’s be real, no one wants to pay extra for shipping.

Is it really comfortable, or just good-looking?

Why settle for one when you can have both? Our bands are designed to look amazing and feel just as great.

We’ve obsessed over comfort, so you don’t have to. No weird pinching or “I need to take this off” moments – just a band that feels as good as it looks.

Will it stand up to my crazy life?

We’ve put our bands through the wringer because we know you don’t have time to baby your watch.

Whether you're hitting the gym, caught in the rain, or dealing with your most accident-prone friend, these bands are built to last. Bring on the hustle!

How do I pick the right size?

Most people use a tape measure (or even just a string) to wrap around their wrist, then add half an inch. But don’t stress – most of our bands are super adjustable, so unless your wrists are tiny or extra large, the standard size should work just fine. Still not sure? Reach out to us, we’re here to help!

Do I need to buy anything else?

Nope! We believe in keeping things simple. Everything you need is in the box. No sneaky extra fees or “must-have” connectors. Just open it, snap it on, and you’re good to go.

How do I keep it looking fresh?

Super easy! Silicone bands just need a quick rinse with soap and water. Leather ones? Just a gentle wipe down.

Metal ones can be cleaned with a soft cloth. And don’t worry – we’ll send you a full care guide, but these bands are pretty low maintenance.

Ready to fall in love with your watch again? Join the 100,000+ people who can't stop showing off their Astra bands.

Magnetic silicone watch band praised for comfort and ease of use. Customers said "best watch band" and noted strong magnets, lightweight feel, and infinite adjustability. Works well for exercise and daily wear. Some found tightening/loosening throughout the day challenging. Great value with excellent color selection.

5 stars: 26 (84%)
4 stars: 3 (10%)
3 stars: 2 (6%)
2 stars: 0 (0%)
1 star: 0 (0%)

Watchband

Stays on very well. Nice color.

Comfortable

So comfortable. Best watch band. Goes on and off easily, and its so light I barely feel it. Adjusting the fit is perfect. Good price.

Watch Band

It feels good on your wrist and is reasonably priced.

Magnets hold securely

Really impressed with this. It looks classier and is much more comfortable than other Apple Sports band. Easier to put on once you get the hang of setting it to your preferred tightness. I would definitely buy this again.

comfortable. easy to put on and take off.

Easiest Apple watch band to put on and off of your wrist. Very light and comfortable. Looks good too.

Great Apple Ultra 2 watch band

Bought this for the ease of fitting the magnetic band to my wrist. It includes a loop to keep it secure during certain activities. So far, I am happy with it.

Great watch band

So far, the magnetic band is solid. I need to keep the loop away from the middle of the band to ensure the band stays attached via the magnet.

Great product!

After dealing with other magnetic straps that have a latch connecting each side its nice to have one with strictly just magnets without additional attachments. Fits well on my 40mm watch SE, no issues. Looks nice and holds secure.

Astra watch band is lightweight

I was skeptical about the bands quality given the price, but I was pleasantly surprised. The band is lightweight, has a strong magnetic grip, and is comfortable.

Durable and good looking

Good quality, durable, good looking, easy to put on. Magnets are strong and secure! Very comfortable. Great looking and stylish!

Secure and comfortable

It is a stylish watch band for my apple watch. it is stylish and reasonably priced.

Great magnetic Apple Watch band

I have an Apple Watch 9 41mm and the installation was easy, the band worked great. It is easy to put on but a little hard to loosen or tighten throughout the day.

Exactly as stated

I was skeptical about how well this would hold but was pleasantly impressed. Great band. Super comfy.

Good choice

I have tried several different styles of Apple Watch bands in the past and this is by far my favorite. This watch band's materials seem very premium in quality. It was very easy to install and is super easy to put on and take off with the magnetic connection.

Looks amazing

Looks great, works great, feels great! What more could you want for this price?

Love them

Of all the silicon magnetic Apple Watch bands I have tried, this is one of my favorites. Besides liking the color, this band is very comfortable and almost infinitely adjustable.

Love

Really like how easy this band makes taking the watch on and off. It stays on really well too! I was worried it would fall off during exercise.

Super duper

Magnets stick just as you would want. Allows for micro adjustments and fits all sizes.

Great buy

I absolutely love this magnetic Apple Watch band! I really like the blue midnight color that matches the pictures online. The magnets are very strong, and it

Very comfortable

I am one of those people that loves color, and I have to say the color selection that a person has to choose from is great. I bought a variety of bands in different colors and widths and so far I am extremely happy with the ones in this collection.

Very nice

I love that its magnetic and adjustable. Holds well and is of good quality.

Easy to change

Great purchase. Would highly recommend! More comfortable than the original Apple Watch band. Super easy to switch out.

Effective for me

Solid band wont hurt your wrist if you wear it all day. Very comfortable. Magnets are pretty strong.

Astra Watch band

I didnt expect to like this as much as I did. The magnets are very nice and strong, keeping the band secure on my wrist while allowing for easy removal. I will use this for a while and will get another one if it proves durable.

Great Buy For The Money

Great value! These bands are easy to interchange and add so much to my outfit!

Love this product. Very classy look. Perfect color.

Easy to adjust and secure with the added silicone band. It is very comfortable, with no "hot spots" rubbing my wrist. It is stable and secure during Hot Yoga sessions, running, cross-training, and sleep. I have tried many styles that work well, but this is my favorite for my lifestyle. I use it with my Ultra 2. This is worth the time and money to try.

Easy to install. It is magnetiic!

My husband has a very large wrist and this fits him perfectly.

great price

Great Buy for the money paid! Stays on well with no issues with clasps!

Wow!

Love this product. Very classy look. Perfect color.

Great and comfortable band

I love the baby pink color. It's easy to install and wear as it is magnetic!

Magnets work!

Feels amazing; the case is as promised. I feel protected now after losing two other covers that kept popping off.

Why 100,000+ Customers Choose Astra Straps

390+ Styles. Premium quality. Prices that actually let you switch it up.

Endless
Style

Match every mood, outfit, occasion

Premium
Materials

No cheap

plastic here

Built
To Last

Survives workouts, adventures, life

Perfect
Fit

Comfortable

from day one

100 Day
Warranty

We’ve got you covered for 100 days

“I recently got the Astra Apple Watch band and am very impressed with its quality and stunning design. Right from the packaging, it was clear this band was made with great care. The premium-grade silicone is soft against the skin, comfortable for all day wear, and durable enough for an active lifestyle. Im thrilled with my purchase."
“Don't waste money on expensive Apple bands. This one is stylish, fits well, and is excellently made. You can get several of these for the price of one official band."
“Ive had many Apple watch bands over the years, and this is the best, coolest, and most comfortable one yet. It makes the watch look extremely upscale. A friend paid much more for the same band elsewhere and couldn't believe my price. Highly recommended. Love!"
“Amazing quality, very flexible and not stiff like other straps. Doesn't have that cheap band smell. Highly recommend, and great to have the option to match the strap color with my style."
“I was looking for a band thats not only exceptionally comfy but also stylish and durable. These bands tick all those boxes. I appreciate the bands design where it tucks in neatly. My original band caught on everything, but this one has a much smoother design. I love it!"
“Astra Straps' customer service is top-notch. I had a question about sizing, and they responded promptly with helpful guidance. It's refreshing to see a company that values its customers."
“Astra Straps has been a game-changer for my watch collection! Their bands are not only stylish but incredibly durable. I've swapped out all my old bands for Astra and couldn't be happier."
“The watch bands fit perfectly around my wrist as there are plenty of holes to adjust to my wrist size. The colors are very nice. The feel of the band is smooth. The way the band clasps is a plus as it is very secure on my wrist."

Effervo Silicone Magnetic Band