---
product_id: 153117341
title: "flintronic Drink Flasks, 400ML Vacuum Cup Flasks Rechargeable LCD Temperature Display | 304 Stainless Steel Hot & Cold Sports Drinks Bottle for Home, Office (1*USB Cable & Bottle Bag Include) Black"
brand: "flintronic"
price: "£23.89"
currency: GBP
in_stock: true
reviews_count: 13
category: "Flintronic"
url: https://www.desertcart.co.uk/products/153117341-flintronic-drink-flasks-400ml-vacuum-cup-flasks-rechargeable-lcd-temperature
store_origin: GB
region: United Kingdom
---

# 6 hrs hot & 5 hrs cold retention Waterproof LCD display 30-day rechargeable battery life flintronic Drink Flasks, 400ML Vacuum Cup Flasks Rechargeable LCD Temperature Display | 304 Stainless Steel Hot & Cold Sports Drinks Bottle for Home, Office (1*USB Cable & Bottle Bag Include) Black

**Brand:** flintronic
**Price:** £23.89
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay in the zone with your perfect sip—temperature on point, style on lock! 💼

## Quick Answers

- **What is this?** flintronic Drink Flasks, 400ML Vacuum Cup Flasks Rechargeable LCD Temperature Display | 304 Stainless Steel Hot & Cold Sports Drinks Bottle for Home, Office (1*USB Cable & Bottle Bag Include) Black by flintronic
- **How much does it cost?** £23.89 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/153117341-flintronic-drink-flasks-400ml-vacuum-cup-flasks-rechargeable-lcd-temperature)

## Best For

- flintronic enthusiasts

## Why This Product

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

## Key Features

- • **Recharge & Go:** Built-in lithium battery powers the LCD for up to 30 days on a single charge—USB cable included for effortless recharging.
- • **Sleek & Versatile Design:** Compact 400ml size with stylish black finish, ideal for office desks, gym sessions, or outdoor adventures.
- • **Instant Temperature Check:** Touch the waterproof LED screen to see your drink’s exact temp—no guessing, no burns.
- • **Premium 304 Stainless Steel:** Durable, corrosion-resistant, BPA-free, and FDA-approved for safe sipping anytime, anywhere.
- • **All-Day Temperature Retention:** Keeps beverages hot above 42°C for 6 hours or refreshingly cold below 10°C for 5 hours—perfect for your busy day.

## Overview

The flintronic 400ML Vacuum Cup Flask combines cutting-edge waterproof LCD temperature display with advanced double-wall vacuum insulation, keeping drinks hot for up to 6 hours or cold for 5. Crafted from premium 304 stainless steel and equipped with a rechargeable battery lasting nearly a month, this sleek, portable flask is designed for professionals who demand precision, durability, and style in their daily hydration.

## Description

flintronic Drink Flasks, 400ML Vacuum Cup Flasks Rechargeable LCD Temperature Display | 304 Stainless Steel Hot & Cold Sports Drinks Bottle for Home, Office (1*USB Cable & Bottle Bag Include) Black : desertcart.co.uk

Review: Great - Firstly this is not a bottle that electronically keeps your water cool or hot drinks warm. In other words, it’s not for setting a temperature and then it stays like that. That’s quite a common misconception about these things. Really it’s just a flask with a digital readout! So fill it with cold juice or water and it’ll stay cool for hours but you’ll notice the temperature creep up from say 10 degrees every hour by a few degrees. It glows blue to show there’s a cold drink inside. Normal temperature shows green. Put hot water in or tea or coffee and you’ll see the indicator ring glow red and show a high temperature. I put boiling water in it as a test and it showed as 99 degrees which is correct. Technically boiling point is 100c but the readout can only show two figures therefore 99 will do. It very slowly crept down and six hours later it was 80 something. I made a cup of tea in it with milk so the temperature was around 86 at the point of brewing. Four hours later and I was still drinking it really hot. You won’t get beyond six hours of protection with this but it’s really good. I wish it was bigger because it only holds around 400ml which is two average cups of tea I’d say. So remember this is just a posh flask, not one of those things that keeps your tea at a steady temperature. I still recommend this highly
Review: This is one of the best things I've invested for myself! - Great product! I have only used it for hot drinks. I wake up at 4am, make coffee around 4.15am for work. Half way through work, at around 11.30am, it is still burning hot. Even when I finish work and get home for around 4pm, it's warm - hot! (Its the same with green tea or any other hot drinks I've previously made with it) My colleagues and general manager also want to get one

## Features

- 【WATERPROOF LED DISPLAY】 : Waterproof LCD display that can be completely submerged under water. You may check the luquid temperature by touching the top LCD screen. No more testing risk for the boiling water.
- 【TEMPERATURE RETENTION】: Camparing to the other vacuum bottles, our vacuum bottle could keep the liquid staying above 42 ° C for up to 6 hours or the liquid staying below 10 ° C for up to 5 hours.
- 【304 STAINLESS STEEL 】 : The 400ml vacuum bottle is made of 304 stainless steel with PP food grade. Tough, corrosion resistant, safe and healthy. Of course, it reach the FDA drinking standard and 100% no BPA included.
- 【RECHARGEABLE】 : Large capacity lithium rechargeable battery , automatic screen off when it is not in use. The upgrade rechargeable design could keep your replacing the battery worry away. The fully recharge battery could run the LCD screen for nearly 30 days,depending how often you use it.
- 【APPLICATIONS】 : The advanced double-wall vacuum technology with the stylish outfit. You could use it no matter you are at home, in the office or outdoors. Simple and practical, it is the best gift for friends, family, children, sons and daughters.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07VCCKNYJ |
| Age Range Description | Adult |
| Age range (description) | Adult |
| Best Sellers Rank | 42,342 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 56 in Camping & Hiking Flasks |
| Brand | flintronic |
| Brand Name | flintronic |
| Cap Type | Screw Cap |
| Capacity | 400 ml |
| Colour | Black |
| Country Of Origin | China |
| Customer Reviews | 4.1 out of 5 stars 444 Reviews |
| Included Components | Battery, Usb Cable |
| Item Dimensions W x H | 8W x 25H centimetres |
| Item Weight | 375 Grams |
| Manufacturer | flintronic®-eu |
| Material Type | Stainless Steel |
| Number of Items | 1 |
| Pattern | Solid |
| Product Care Instructions | Hand Wash Only |
| Recommended Uses For Product | Water, Outdoor Activities |
| Recommended uses for product | Water, Outdoor Activities |
| Special Features | Temperature Display |
| Special feature | Temperature Display |
| Theme | Sport |
| Unit Count | 1 count |
| With Lid | Yes |

## Images

![flintronic Drink Flasks, 400ML Vacuum Cup Flasks Rechargeable LCD Temperature Display | 304 Stainless Steel Hot & Cold Sports Drinks Bottle for Home, Office (1*USB Cable & Bottle Bag Include) Black - Image 1](https://m.media-amazon.com/images/I/61wQCq0ZlgL.jpg)
![flintronic Drink Flasks, 400ML Vacuum Cup Flasks Rechargeable LCD Temperature Display | 304 Stainless Steel Hot & Cold Sports Drinks Bottle for Home, Office (1*USB Cable & Bottle Bag Include) Black - Image 2](https://m.media-amazon.com/images/I/61-c4oYgGcL.jpg)
![flintronic Drink Flasks, 400ML Vacuum Cup Flasks Rechargeable LCD Temperature Display | 304 Stainless Steel Hot & Cold Sports Drinks Bottle for Home, Office (1*USB Cable & Bottle Bag Include) Black - Image 3](https://m.media-amazon.com/images/I/61cTTdbh6ZL.jpg)
![flintronic Drink Flasks, 400ML Vacuum Cup Flasks Rechargeable LCD Temperature Display | 304 Stainless Steel Hot & Cold Sports Drinks Bottle for Home, Office (1*USB Cable & Bottle Bag Include) Black - Image 4](https://m.media-amazon.com/images/I/61pbIJ08rTL.jpg)
![flintronic Drink Flasks, 400ML Vacuum Cup Flasks Rechargeable LCD Temperature Display | 304 Stainless Steel Hot & Cold Sports Drinks Bottle for Home, Office (1*USB Cable & Bottle Bag Include) Black - Image 5](https://m.media-amazon.com/images/I/41xAodEdFuL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great
*by C***K on 21 December 2021*

Firstly this is not a bottle that electronically keeps your water cool or hot drinks warm. In other words, it’s not for setting a temperature and then it stays like that. That’s quite a common misconception about these things. Really it’s just a flask with a digital readout! So fill it with cold juice or water and it’ll stay cool for hours but you’ll notice the temperature creep up from say 10 degrees every hour by a few degrees. It glows blue to show there’s a cold drink inside. Normal temperature shows green. Put hot water in or tea or coffee and you’ll see the indicator ring glow red and show a high temperature. I put boiling water in it as a test and it showed as 99 degrees which is correct. Technically boiling point is 100c but the readout can only show two figures therefore 99 will do. It very slowly crept down and six hours later it was 80 something. I made a cup of tea in it with milk so the temperature was around 86 at the point of brewing. Four hours later and I was still drinking it really hot. You won’t get beyond six hours of protection with this but it’s really good. I wish it was bigger because it only holds around 400ml which is two average cups of tea I’d say. So remember this is just a posh flask, not one of those things that keeps your tea at a steady temperature. I still recommend this highly

### ⭐⭐⭐⭐⭐ This is one of the best things I've invested for myself!
*by M***E on 8 March 2020*

Great product! I have only used it for hot drinks. I wake up at 4am, make coffee around 4.15am for work. Half way through work, at around 11.30am, it is still burning hot. Even when I finish work and get home for around 4pm, it's warm - hot! (Its the same with green tea or any other hot drinks I've previously made with it) My colleagues and general manager also want to get one

### ⭐⭐⭐⭐ Good
*by C***H on 22 December 2020*

Sleek. Good for office use. I wish it was larger. It kept cool drinks although i found hot drinks like coffee didn't stay as long as indicated. Peharps soups stay 'warm'

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-08-30*