---
product_id: 723030657
title: "Clean & Empty Cordless Vacuum Cleaner with Auto-Empty System, Lightweight Anti Hair Wrap Vacuum with Pet & Crevice Tools, 40 Mins, Charging Dock, LED Headlights, White,Mohogany, BU3521UKTSB"
brand: "shark"
price: "€ 869.53"
currency: EUR
in_stock: true
reviews_count: 8
category: "Shark"
url: https://www.desertcart.be/products/723030657-clean-and-empty-cordless-vacuum-cleaner-with-auto-empty-system
store_origin: BE
region: Belgium
---

# 40 mins runtime 99.9% dust & allergen sealed Auto-empty base holds 30 days dirt Clean & Empty Cordless Vacuum Cleaner with Auto-Empty System, Lightweight Anti Hair Wrap Vacuum with Pet & Crevice Tools, 40 Mins, Charging Dock, LED Headlights, White,Mohogany, BU3521UKTSB

**Brand:** shark
**Price:** € 869.53
**Availability:** ✅ In Stock

## Summary

> 🧼 Clean smarter, not harder — the future of effortless home care!

## Quick Answers

- **What is this?** Clean & Empty Cordless Vacuum Cleaner with Auto-Empty System, Lightweight Anti Hair Wrap Vacuum with Pet & Crevice Tools, 40 Mins, Charging Dock, LED Headlights, White,Mohogany, BU3521UKTSB by shark
- **How much does it cost?** € 869.53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/723030657-clean-and-empty-cordless-vacuum-cleaner-with-auto-empty-system)

## 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

- • **Breathe Easy, Live Better:** Seals away 99.9% of dust and allergens, creating a healthier home environment.
- • **Effortless Clean, Zero Fuss:** Auto-empty base stores dirt for up to 30 days—forget manual emptying forever.
- • **Always Charged, Always Ready:** Charging dock keeps your vacuum powered and ready with up to 40 minutes runtime.
- • **Light as Air, Strong as Shark:** 30% lighter design with anti-hair wrap brush-roll for seamless carpet & floor cleaning.
- • **Versatile Tools for Every Nook:** Includes motorised hand, crevice, multi-surface & anti-allergen brushes for total home care.

## Overview

The Shark Clean & Empty Cordless Vacuum Cleaner combines a lightweight 2.7kg design with a powerful 40-minute runtime and an innovative auto-empty system that seals away 99.9% of dust and allergens. Equipped with multiple specialized tools and LED headlights, it ensures thorough cleaning on carpets and hard floors while minimizing maintenance with a sealed bagless base that holds dirt for up to 30 days.

## Description

Powerful cordless vacuum with auto-empty base trapping 99.9% dust and allergens. Lightweight design, anti-hair brush, and 40-min runtime make cleaning effortless.

Review: Love this! Best hoover I have had. - Extremely easy to use and has made vacuuming a pleasure! My teenage daughter actually offers to use it 🤣. Love the fact it empties into the box instead of having to empty into a bin each time. Powerful suction and it picks cat hair up well. It rolls well into corners. It’s light to use the easy to take apart and use attachments. This was expensive but compared to others of similar price, I rate it higher by far. It has limited time without recharging. I do 3 rooms and the hall and it goes down to 3 bars (half ish).
Review: Great vacuum to clean my 1 bed flat - I have used it for a month since the purchase. So far, can't complain! The suction is good and the battery life is sufficient to clean my flat (about 40sqm). The auto empty system as well as the standing dock has been super useful, keeping my vacuum to constantly be charged. Other functionality wise, it is a little basic, but still the whole package I think - auto/eco/power mode, light in front of the main head, battery level is shown as 4 blocks. The downside is, it is a little loud I feel like compared to the other vacuums I have used. The auto empty functionality can be a little loud as well, but then again it's only for a couple seconds and you can turn it off as well. Overall, for the price point, this is a great cleaner compared to the other knock off dyson/shark brands in desertcart.

## 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), Motorised Hand, Crevice & Multi Surface Tools, Anti-Allergen Brush, Bag. Capacity: 1.3L (Base), 0.42L (Vacuum). Weight: 2.7kg. (Vacuum). Colour: White/Mohogany

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0F5X43Z7P |
| Battery Life | 40 minutes |
| Best Sellers Rank | 41,155 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 79 in Stick Vacuums & Electric Brooms |
| Brand Name | Shark |
| Capacity | 1.3 litres |
| Colour | White/Mohogany |
| Country Of Origin | China |
| Customer Reviews | 4.5 4.5 out of 5 stars (280) |
| Filter Type | HEPA Filter |
| Form Factor | Stick |
| Included Components | Anti-Allergen Brush, Auto-Empty Charging Dock, Crevice Tool, Motorised Hand Tool, Multi Surface 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 | Cordless Stick Vacuum Cleaner |
| Item Weight | 2.7 Kilograms |
| Manufacture Year | 2025 |
| Manufacturer | Shark |
| Model Name | Shark Clean & Empty |
| Model Number | BU3521UKTSB |
| 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 |
| Recommended Uses For Product | Floor, Pet Hair |
| Runtime | 40 minutes |
| Style Name | 1 x Detect Technology & Motorised Tool |
| Surface Recommendation | Carpets, Hard Floors, Upholstory, in Car, All Floors |
| UPC | 622356329569 |
| 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

![Clean & Empty Cordless Vacuum Cleaner with Auto-Empty System, Lightweight Anti Hair Wrap Vacuum with Pet & Crevice Tools, 40 Mins, Charging Dock, LED Headlights, White,Mohogany, BU3521UKTSB - Image 1](https://m.media-amazon.com/images/I/71Vyo7zgHiL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Love this! Best hoover I have had.
*by S***. on 21 January 2026*

Extremely easy to use and has made vacuuming a pleasure! My teenage daughter actually offers to use it 🤣. Love the fact it empties into the box instead of having to empty into a bin each time. Powerful suction and it picks cat hair up well. It rolls well into corners. It’s light to use the easy to take apart and use attachments. This was expensive but compared to others of similar price, I rate it higher by far. It has limited time without recharging. I do 3 rooms and the hall and it goes down to 3 bars (half ish).

### ⭐⭐⭐⭐⭐ Great vacuum to clean my 1 bed flat
*by H***K on 2 November 2025*

I have used it for a month since the purchase. So far, can't complain! The suction is good and the battery life is sufficient to clean my flat (about 40sqm). The auto empty system as well as the standing dock has been super useful, keeping my vacuum to constantly be charged. Other functionality wise, it is a little basic, but still the whole package I think - auto/eco/power mode, light in front of the main head, battery level is shown as 4 blocks. The downside is, it is a little loud I feel like compared to the other vacuums I have used. The auto empty functionality can be a little loud as well, but then again it's only for a couple seconds and you can turn it off as well. Overall, for the price point, this is a great cleaner compared to the other knock off dyson/shark brands in amazon.

### ⭐⭐⭐⭐ Light to lift, easy to charge and empty
*by J***N on 24 December 2025*

Perfect, easy to lift. It charges in my cupboard and is always ready to use. Light to use, good for daily/weekly run around. Turns effortlessly to get in corners and awkward spots. Lifts fur from upholstery reasonably well with the attachments. Drawbacks: Suction a little lower than my old vacuum and sometimes it does not auto-empty and needs to be opened up by hand. The base unit takes a lot of dust before it needs emptying. The base unit is pretty straightforward to remove and empty. The vacuum comes with one filter in it, I would advise having a spare. They can be washed, but a spare is needed while the other one is drying.

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-05-03*