---
product_id: 650621113
title: "Shark Clean & Empty Cordless Vacuum Cleaner with Auto-Empty System, Lightweight Anti Hair Wrap Vacuum with Pet & Crevice Tools, 40 Mins Run-Time, Charging Dock, LED Headlights, White/Blue, BU3521UK"
brand: "shark"
price: "107338 kr"
currency: ISK
in_stock: true
reviews_count: 8
category: "Shark"
url: https://www.desertcart.is/products/650621113-shark-clean-and-empty-cordless-vacuum-cleaner-with-auto-empty
store_origin: IS
region: Iceland
---

# 40 mins runtime Anti-hair wrap brush-roll Auto-empty base holds 1.3L dirt Shark Clean & Empty Cordless Vacuum Cleaner with Auto-Empty System, Lightweight Anti Hair Wrap Vacuum with Pet & Crevice Tools, 40 Mins Run-Time, Charging Dock, LED Headlights, White/Blue, BU3521UK

**Brand:** shark
**Price:** 107338 kr
**Availability:** ✅ In Stock

## Summary

> 🦈 Clean smarter, not harder — the future of cordless vacuuming is here!

## Quick Answers

- **What is this?** Shark Clean & Empty Cordless Vacuum Cleaner with Auto-Empty System, Lightweight Anti Hair Wrap Vacuum with Pet & Crevice Tools, 40 Mins Run-Time, Charging Dock, LED Headlights, White/Blue, BU3521UK by shark
- **How much does it cost?** 107338 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/650621113-shark-clean-and-empty-cordless-vacuum-cleaner-with-auto-empty)

## Best For

- shark enthusiasts

## Why This Product

- Trusted shark brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Spotlight on Clean:** Built-in LED headlights illuminate hidden dust in dark corners and under furniture.
- • **Pet Hair’s Worst Enemy:** Self-cleaning anti-hair wrap brush-roll adapts seamlessly between carpets and hard floors.
- • **Effortless Clean, Zero Fuss:** Auto-empty base seals away dust & allergens for up to 30 days—forget manual emptying forever.
- • **Always Charged, Always Ready:** Charging dock keeps your vacuum powered up with up to 40 minutes of cordless runtime.
- • **Light as Air, Strong as Shark:** 30% lighter than previous models for easy maneuvering without sacrificing powerful suction.

## Overview

The Shark Clean & Empty Cordless Vacuum BU3521UK combines a powerful 0.41 HP motor with a lightweight 2.7kg design and a 1.3L auto-empty base that traps 99.9% of dust and allergens. Featuring a self-cleaning anti-hair wrap brush-roll, LED headlights, and up to 40 minutes of runtime, it’s engineered for effortless, hygienic cleaning on all floor types. Perfect for busy professionals seeking a sleek, low-maintenance vacuum that’s always ready to tackle pet hair and everyday messes.

## Description

From the manufacturer

Review: Shark Vac Clean and Empty - Excellent Product - I have had this for a year now and can give a fair review. PROS: Excellent performance, I had a Dyson V8 pet before and this really out performed it. As I have two cats this was chosen to deal with the shedding and it handles this task like a boss. I have carpet and hard floors I have no problem as it automatically changes suction to deal with both. Very versatile and cleans well No cords to wory about and the battery life is very true to time cleaning. I get around 30 minutes full power. 40 minutes on Eco power. LED indicators lets you know how much battery you have left. You also can choose different cleaning modes on the handle area on a press of a button. Very easy to take out filters and de-asemble to clean. Really like that it has little buttons to clean the entire vacuum for good maintenance. Quick and easy. The clean and empty feature means no need to be fiddling with emptying the Vacuum manually. Its very light weight and easy to move around/ carry. desertcart sells all the required Shark filters so I got a 4 set and stocked put. So while filters are clean/ washed and drying I can use a new one without waiting. CONS: You will need to empty vacuum by sitting it on the clean and empty cradle often while cleaning as the cup will fill quickly as its small but not a problem just a thought to keep in mind if you have a large home. However thats quick just place it on the stand and it suctions out in seconds. You must have the moon lit botton off to empty the vacuum. If the moon lit botton is on that's the quiet mode setting and it will not empty vacuum it you sit it on the stand with it on. Cleaning the filters - I would say to wash these every month or so if you use the vacuum every day or 2 days like I do. I had this for 1 year and I only just cleaned all filters in the Vacuum and the dust collection bin. There are 3 fillers in the dust collection bin, 2 sponges and 1 HEPA filter. In the main vacuum there is one HEPA filter. So 4 in total. Dish liquid and a dish brush can be used to clean HEPA filters. Let them completely air dry before re-inserting them in the Vacuum. The cleaning can be around 30 minutes depends on how dirty your vacuum is. There are little buttons on the Vacuum and the empty bin to get to the filters. Its very easy to take each part apart to clean. Overall excellent product I will recommend it and will also stick with any version of the Shark clean and empty. I am extremely pleased with this product. 10/10
Review: Compact, great suction, but noisy. - So far so good, though I will update if required. The good bits: Brilliant suction. Nice and compact if you have a smaller home. Nice and lightweight to manoeuvre. Performs very well on hard floors. Self emptying dust receptacle is great, especially if you don’t want to handle dead spiders! Bright headlights for darker areas. Great for animal hair. Not so good bits: The self emptying dock doesn’t always discharge everything, sometimes it needs a little shake. Not quite as good on carpeted areas, but still performs better than most. Charging lead isn’t that long. Run time not quite as long as it states, but still adequate. Emptying dock is noisy, not so good if you’re in a flat or terraced. Even though we’re detached, our neighbour claims to have heard it when we used it late one evening. Overall, bought this to replace a cordless Miele, and it (so far) has performed very well. Having recently moved to a larger house, it’s perfect for moving from room to room without the faff of plugging and unplugging. Not all of our rooms are used regularly, so just need a light going over most days. Husband has been doing some major building renovations, for which we’re using the Henry, but this is just perfect for everyday mess from the kids. Recommended if you can get it at the sale price.

## Features

- AUTOMATICALLY EMPTIES ITSELF: Completely sealed bagless base holds dirt and debris for up to 30 days, so you can forget about emptying for weeks at a time. No more manual emptying after every clean
- SEALS AWAY FINE DUST: Traps up to 99.9% of dust & allergens inside the base (Based on IEC standard 62885-2 CI. 5.14 at 0.3 to 10 microns.)
- LIGHTWEIGHT: 30% lighter (vs IZ300UK.) The Anti Hair Wrap self-cleaning brush-roll automatically adjusts to clean carpets & hard floors
- ALWAYS READY: Charging while stored on the dock, it’s always ready for the next clean. Up to 40 mins run-time (In ECO power mode, non-motorised tool). Detachable handheld vacuum
- INCLUDES: Shark Clean & Empty Cordless Vacuum Cleaner, Auto-Empty Charging Dock (UK plug), Pet Multi-Tool, Crevice Tool. Capacity: 1.3L (Base), 0.42L (Vacuum). Weight: 2.7kg (Vacuum). Colour: White/Blue
- 5-YEAR GUARANTEE: 2 years for batteries. Upon registration with Shark. UK & ROI only

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D5MMK4BR |
| Battery Description | Lithium-Ion |
| Battery Life | 40 minutes |
| Best Sellers Rank | 1,252 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 7 in Stick Vacuums & Electric Brooms |
| Brand | Shark |
| Brand Name | Shark |
| Capacity | 1.3 litres |
| Colour | White/Blue |
| Control Method | App |
| Controller Type | Push Button |
| Country Of Origin | China |
| Customer Reviews | 4.5 out of 5 stars 268 Reviews |
| Filter Type | HEPA Filter |
| Filter type | HEPA Filter |
| Form Factor | Stick |
| Included Components | Charging Dock, Crevice Tool, Pet Tool |
| Indoor Outdoor Usage | Indoor |
| Is Product Cordless | Yes |
| Item Dimensions L x W x H | 35.3L x 26.4W x 109.2H centimetres |
| Item Type Name | Clean and Empty Cordless Vacuum Cleaner with Auto-Empty System, Lightweight Anti Hair Wrap Vacuum with Pet, Crevice Tools, 40 Mins Run-Time, Charging Dock, LED Headlights |
| Item Weight | 2.7 Kilograms |
| Manufacture Year | 2024 |
| Manufacturer | Shark |
| Model Name | Pico |
| Model Number | BU3521UK |
| Noise Level | 80 Decibels |
| Number of Handles | 1 |
| Number of Items | 1 |
| Number of Power Levels | 2 |
| Other Special Features of the Product | Auto-Empty Base, Anti-Allergen Complete Seal, Anti Hair Wrap, Auto-Adjusts to Floor Type, Charging Dock, Up to 40 Mins run-time |
| Portable | Yes |
| Power Source | Battery Powered |
| Power source | Battery Powered |
| Recommended Uses For Product | Carpets, Hard Floors, Upholstery, Car Interiors, Pet Hair Removal |
| Runtime | 40 minutes |
| Special feature | Auto-Empty Base, Anti-Allergen Complete Seal, Anti Hair Wrap, Auto-Adjusts to Floor Type, Charging Dock, Up to 40 Mins run-time Special feature Auto-Empty Base, Anti-Allergen Complete Seal, Anti Hair Wrap, Auto-Adjusts to Floor Type, Charging Dock, Up to 40 Mins run-time See more |
| Style Name | Standard |
| Surface Recommendation | Carpets, Hard Floors, Upholstory, in Car, All Floors |
| Surface recommendation | Carpets, Hard Floors, Upholstory, in Car, All Floors |
| UPC | 622356297622 |
| Unit Count | 1.0 count |
| Voltage | 240 Volts |
| Wattage | 240 watts |

## Product Details

- **Brand:** Shark
- **Filter type:** HEPA Filter
- **Power source:** Battery Powered
- **Surface recommendation:** Carpets, Hard Floors, Upholstory, in Car, All Floors

## Images

![Shark Clean & Empty Cordless Vacuum Cleaner with Auto-Empty System, Lightweight Anti Hair Wrap Vacuum with Pet & Crevice Tools, 40 Mins Run-Time, Charging Dock, LED Headlights, White/Blue, BU3521UK - Image 1](https://m.media-amazon.com/images/I/61EbYyosGFL.jpg)
![Shark Clean & Empty Cordless Vacuum Cleaner with Auto-Empty System, Lightweight Anti Hair Wrap Vacuum with Pet & Crevice Tools, 40 Mins Run-Time, Charging Dock, LED Headlights, White/Blue, BU3521UK - Image 2](https://m.media-amazon.com/images/I/71htqBCtlcL.jpg)
![Shark Clean & Empty Cordless Vacuum Cleaner with Auto-Empty System, Lightweight Anti Hair Wrap Vacuum with Pet & Crevice Tools, 40 Mins Run-Time, Charging Dock, LED Headlights, White/Blue, BU3521UK - Image 3](https://m.media-amazon.com/images/I/71KqLl8k9UL.jpg)
![Shark Clean & Empty Cordless Vacuum Cleaner with Auto-Empty System, Lightweight Anti Hair Wrap Vacuum with Pet & Crevice Tools, 40 Mins Run-Time, Charging Dock, LED Headlights, White/Blue, BU3521UK - Image 4](https://m.media-amazon.com/images/I/71qfMjwGtfL.jpg)
![Shark Clean & Empty Cordless Vacuum Cleaner with Auto-Empty System, Lightweight Anti Hair Wrap Vacuum with Pet & Crevice Tools, 40 Mins Run-Time, Charging Dock, LED Headlights, White/Blue, BU3521UK - Image 5](https://m.media-amazon.com/images/I/71UCTKvb3EL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Shark Vac Clean and Empty - Excellent Product
*by B***M on 13 May 2026*

I have had this for a year now and can give a fair review. PROS: Excellent performance, I had a Dyson V8 pet before and this really out performed it. As I have two cats this was chosen to deal with the shedding and it handles this task like a boss. I have carpet and hard floors I have no problem as it automatically changes suction to deal with both. Very versatile and cleans well No cords to wory about and the battery life is very true to time cleaning. I get around 30 minutes full power. 40 minutes on Eco power. LED indicators lets you know how much battery you have left. You also can choose different cleaning modes on the handle area on a press of a button. Very easy to take out filters and de-asemble to clean. Really like that it has little buttons to clean the entire vacuum for good maintenance. Quick and easy. The clean and empty feature means no need to be fiddling with emptying the Vacuum manually. Its very light weight and easy to move around/ carry. Amazon sells all the required Shark filters so I got a 4 set and stocked put. So while filters are clean/ washed and drying I can use a new one without waiting. CONS: You will need to empty vacuum by sitting it on the clean and empty cradle often while cleaning as the cup will fill quickly as its small but not a problem just a thought to keep in mind if you have a large home. However thats quick just place it on the stand and it suctions out in seconds. You must have the moon lit botton off to empty the vacuum. If the moon lit botton is on that's the quiet mode setting and it will not empty vacuum it you sit it on the stand with it on. Cleaning the filters - I would say to wash these every month or so if you use the vacuum every day or 2 days like I do. I had this for 1 year and I only just cleaned all filters in the Vacuum and the dust collection bin. There are 3 fillers in the dust collection bin, 2 sponges and 1 HEPA filter. In the main vacuum there is one HEPA filter. So 4 in total. Dish liquid and a dish brush can be used to clean HEPA filters. Let them completely air dry before re-inserting them in the Vacuum. The cleaning can be around 30 minutes depends on how dirty your vacuum is. There are little buttons on the Vacuum and the empty bin to get to the filters. Its very easy to take each part apart to clean. Overall excellent product I will recommend it and will also stick with any version of the Shark clean and empty. I am extremely pleased with this product. 10/10

### ⭐⭐⭐⭐⭐ Compact, great suction, but noisy.
*by �***� on 27 May 2025*

So far so good, though I will update if required. The good bits: Brilliant suction. Nice and compact if you have a smaller home. Nice and lightweight to manoeuvre. Performs very well on hard floors. Self emptying dust receptacle is great, especially if you don’t want to handle dead spiders! Bright headlights for darker areas. Great for animal hair. Not so good bits: The self emptying dock doesn’t always discharge everything, sometimes it needs a little shake. Not quite as good on carpeted areas, but still performs better than most. Charging lead isn’t that long. Run time not quite as long as it states, but still adequate. Emptying dock is noisy, not so good if you’re in a flat or terraced. Even though we’re detached, our neighbour claims to have heard it when we used it late one evening. Overall, bought this to replace a cordless Miele, and it (so far) has performed very well. Having recently moved to a larger house, it’s perfect for moving from room to room without the faff of plugging and unplugging. Not all of our rooms are used regularly, so just need a light going over most days. Husband has been doing some major building renovations, for which we’re using the Henry, but this is just perfect for everyday mess from the kids. Recommended if you can get it at the sale price.

### ⭐⭐⭐⭐ 2 drawbacks
*by R***E on 23 May 2026*

This is an excellent product but any buyer should be aware of two things: 1. Despite all the hype, you will NOT be able to clean a bog-standard UK 3-bed semi in one go. I can get about 75% done on one charge. It might be JUST possible if your house has little or no carpets but mostly or completely laminate flooring. Otherwise, budget for a second battery - £90 from Shark, £30 and up for "compatibles" or (my choice) do the house in two separate goes. 2. The power cord is ridiculously short. I have an outlet in the under-stairs cupboard that is about 1.5m above the floor and it won't reach.

## Frequently Bought Together

- Shark Clean & Empty Cordless Vacuum Cleaner with Auto-Empty System, Lightweight Anti Hair Wrap Vacuum with Pet & Crevice Tools, 40 Mins Run-Time, Charging Dock, LED Headlights, White/Blue, BU3521UK
- Shark Car Detail Kit [3726FFJ200UK] Official Accessory Compatible with Shark Cordless Vacuum Cleaners, Black , 1 litres, For IZ201/IZ251

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-06-03*