Wallet Type
  • Hardware Wallet, Mobile Wallet
  • Supported Cryptocurrencies
    Number of Currencies
  • 22 (Show More)
  • Recovery Option
  • Yes (Show More)
  • Private Key Access
  • Yes
  • Storage Type
  • Cold Storage
  • Security Level
  • High (Show More)
  • User Friendliness
  • Easy To Use (Show More)
  • Price
  • $99 + Possibly Free Shipping

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CoolWallet S Review

CoolWallet S is a hardware/mobile based cold storage HD (Hierarchical Deterministic) wallet, which was originally launched in 2016 by a Taiwanese company named CoolBitX.

The mobile hardware wallet can be used to store, swap, send and/or receive cryptocurrencies with the single click of a button. Unlike other hardware wallets like Trezor or Ledger, which needs to be connected to a computer or laptop via USB, CoolWallet is designed to connect to a smartphone via Bluetooth or NFC (Near Field Communication). Its physical appearance also differs from the other cold storage wallets, in that it looks exactly like a credit card with a button and an integrated display.

With a major strategic investment from SBI Holdings (formerly known as Soft Bank) in 2018, the company launched the S version of its wallet named CoolWallet S. The main objective behind this product is to provide a user-friendly, secure, sleek and lightweight mobile-based hardware wallet for trading and securing cryptos on the go. As it uses a highly-secure element (SE) to store the private keys, it is virtually impossible for fraudsters to steal coins from this wallet.

In addition to passcodes and touch ID, CoolWallet also makes use of facial recognition to provide 2+1 Factor Authentication in order to secure the customer’s digital assets. Similarly, this credit card-sized wallet provides a complete offline storage for users to securely store their crypto-based assets. Apart from being highly durable, CoolWallet S is also waterproof, shockproof, tamper-proof, temperature-resistant and extremely simple to store and trade cryptos on the go.

CoolWallet S can be purchased from its official website for $99 (€87).  The CoolWallet website even has a combo offer of two devices: CoolWallet S Duo for the fantastic price of $159.

Coolwallet S Card Presentation Review

Supported Cryptocurrencies

CoolWallet S only supports a limited number of cryptocurrencies. However, it allows clients to add their own ERC20 tokens, so long as they are added suitably. The list of coins and tokens supported by the wallet is given below:

Bitcoin (BTC), Bitcoin Cash (BCH), Ripple (XRP), Ethereum (ETH), Litecoin (LTC), Horizen (ZEN), Binance Coin (BNB), TrueUSD (TUSD), WETH (WETH), JoyToken (JOY), ZPER (ZPR), Cortex (CTXC), USD Coin (USDC), BitDegree (BDG), Formosa Financial (FMF), Dai (DAI), 0x (ZRX), Gemini Dollar (GUSD), Metal (MTL).

To get the latest list of cryptocurrencies supported by CoolWallet, simply visit their site, and follow the below instructions:

  • Go to the ‘Support’ section (found at the top of the site’s landing page)
  • Select the ‘General Questions’ box
  • Click on the Coins/Tokens Supported By CoolWallet S quesiton

Once you have exhausted this query, we recommend for you to go back to the questions’ list to clarify any other uncertainties you may have on this wallet. This wallet does not support IOTA, Dash, NEO or Stellar.


Coolwallet S App Interface Guide

CoolWallet makes use of the BLE (Bluetooth Low Energy) for connecting to a smartphone or a tablet. The mobile app for CoolWallet is available for both Android and iOS platforms. The minimum version needed for iOS is 9.1, whilst for Android-based devices, the minimum of 5.0 version is needed to use the wallet. As for the BLE version on your smartphone, you need to make sure you have the minimum of BLE 4.0 software available.

To download the Android app, click here. As for the iOS version, it can also be easily accessed by clicking on this link.

Setup & Configuration

Coolwallet S Package Full Review

Once you receive the manufacturer’s box, you need to ensure that the box contains the following components:

  • 1 CoolWallet
  • 1 USB Charging cable
  • 1 Charger
  • 1 Sticker
  • 1 Recovery card
  • 1 Charging pad
  • 1 getting started leaflet

Once you have ensured you indeed have the above components, you can get started with the wallet’s setup.

Setting Up the Wallet

CoolWallet S App

Before setting up the wallet, you need to charge the card using the USB cable. Once this part is complete, follow the below steps:

  1. Download and install the CoolWallet mobile app on your phone
  2. Turn on the wallet
  3. Open the CoolWallet app on your phone
  4. Then, tap the Connect button (located below the Wallet ID) to pair your wallet and phone. (If the app prompts you to update to the latest version of firmware, then be sure to follow said instruction)
  5. Next, you will be taken to a new screen which displays two buttons: Create, Recover. Tap the Create button.
  6. You now need to decide how would you would like to generate the recover seeds, whether via Card or App.  It is highly recommended to select ‘By Card’ option, as it is considered more secure.
  7. Next, select the length of the recovery seed (12, 18 or 24) and tap the Generate button. (It is highly recommended to choose the maximum length for better security)
  8. Now, the seeds (which are in numeric format) will be displayed on your wallet, one at a time. Press the button on the wallet to move to the next word.
  9. Carefully note down all the words of the recovery seed on the given recovery card. Alternatively, you can store it as an image file and keep it somewhere secure.
  10. Next, you need to calculate the sum of all the seeds and type the answer in the box provided. Once this is done, tap the Verify button.
  11. After you successfully complete the verification procedure, tap the Create Wallet button.Coolwallet S Card Back and Front Review

Congratulations! You have successfully created your wallet account on the CoolWallet S device. It should not take more than 15 to 20 minutes to finish setting up your wallet.

Receiving Cryptocurrencies

Follow the below-mentioned steps to receive any of the supported cryptocurrencies on CoolWallet S:

  1. Open the CoolWallet app on your phone
  2. Tap Receive, found at the bottom of the screen
  3. Next, select the cryptocurrency you would like to receive from the drop-down box. (If your desired crypto is not listed on the box, then you can add the same by navigating to Settings->Currency->Coin Display)
  4. To share the receiving address with the sender, you can use any of the following options:
  • Share button – tap the Share icon to share the address via other apps like Twitter, email, WhatsApp or other apps installed on your phone
  • QR code – scan the code to share the receiving address
  • Clipboard – tap the icon to copy the address and paste it on whatever application you need

Once the sender completes the transaction, you should be able to see the cryptocurrencies on your wallet.

Sending Cryptocurrencies

Follow the steps mentioned below to send any of the supported cryptocurrency from CoolWallet S to another cryptocurrency wallet. At this stage, it is assumed that the user would have already deposited some cryptos on the wallet.

  1. Open the CoolWallet app on your phone.
  2. Tap Send, located on the bottom of the screen.
  3. Enter the address in the To field section, either by scanning the bar code or pasting the address manually.
  4. Next, select the cryptocurrency you would like to send from the drop-down menu.
  5. The transaction fee is automatically calculated based on the crypto and the amount of transfer. If you would like to modify that for fast transactions, then you can either use the slider or enter the number manually. (More fee, Less transaction time)
  6. Finally, tap the Send button.

Congratulations! You have successfully moved out the cryptos from CoolWallet S to another wallet.

Exchanging Cryptos

In addition to storing, sending and receiving cryptos, CoolWallet S allows users to trade or exchange cryptocurrencies by integration with Changelly exchange. To find out more information about exchanging cryptos, we recommend you to check out our detailed review on Changelly Exchange.


The communication between the wallet and smartphone is encrypted using AES 256 standard, to ensure security measures are taken. Since it uses a dedicated passcode for pairing, it is not possible for any new or unauthorized device to communicate or retrieve data from the wallet. What’s more, the secure element chip that holds the private keys is an CC EAL 5+ certified S.E. Chipset, which is equivalent to the FIPS-compliant security level used in military equipment. Since it is impossible to pair the wallet with unauthorized devices, users’ funds are not at risk, even if the wallet is lost or stolen. CoolWallet S also allows users to authenticate transactions through Touch or Face ID, which further safeguards users’ assets, even if both the wallet and phone are lost or stolen.

CoolBitX claims that it is almost impossible for hackers or fraudsters to break and get the private key out of the chip. Since CoolWallet S makes use of a patented “Cold Compression”, it is impossible for a hacker to disassemble the card, place an intercepting device and restoring the card to its original state. What’s more the card switches off its display and disconnects itself from the phone if inactive for more than 1 minute, further guaranteeing security.

Recovery Options

Like all other hardware wallets, CoolWallet S also allows you to recover the funds, in case your wallet is lost, broken or stolen.

  1. First, open the CoolWallet app on your phone.
  2. Next, pair your new wallet card with the app.
  3. Tap the Recover button displayed on the screen.
  4. Enter all the words of the recovery seed correctly. Note: even if you enter a single number incorrectly, it will not be possible to recover your funds.
  5. Tap Verify button.

Congratulations! You have successfully recovered your CoolWallet S.

Comments from Crypto Investors

CoolWallet S Card CoverGenerally, the users on Reddit, Twitter or other social media platforms are more fascinated with the physical appearance of the CoolWallet S, as it can be easily carried in the user’s pocket if and when on the go.

CoolWallet Reddit Comment 1

CoolWallet Twitter Comment
Since it is a mobile-based wallet, users need not worry about carrying a cable to connect the card to a computer. Many investors feel that it takes less setup time when compared to other hardware wallets like KeepKey or Trezor.

They also feel that it is relatively easy to create the wallet account on CoolWallet S as there is no need to install any additional apps for every cryptocurrency, like in Ledger. Tech savvy users find this wallet very helpful, as the mobile app is packed with a lot of customizable options related to security, user interface and more.

CoolWallet Play Store

CoolWallet vs Ledger

Both CoolWallet and Ledger fall under the category of hardware wallets that offer utmost protection to the user’s cryptos. While CoolWallet is a mobile-first wallet, Ledger Nano S wallet can be connected to both the computer (via USB). Ledger offers support for a large number of cryptocurrencies when compared with CoolWallet. However, CoolWallet is clearly the winner, when it comes to ease-of-use and accessibility.

However, In 2019 Ledger announced the Ledger Nano X which will be a direct mobile/hardware wallet competitor to the CoolWallet S.

Regarding the security, both wallets take extensive security measures like encrypted communication and two-factor authentication to protect customers’ funds. When it comes to price, Ledger is less costly when compared with CoolWallet S. Ledger is ideal for those who wish to trade different types of cryptos whereas CoolWallet S is best for someone who is interested in only the top cryptocurrencies.

On the plus side, Coolwallet S allows its users to swap cryptos within the app itself thanks to their partnership with Changelly Exchange.

CoolWallet vs Coinbase

Both CoolWallet and Coinbase mobile wallet allow users to send, receive and store cryptos on the go. Both wallets support ERC20 tokens. Even though Coinbase offers exceptional security for the customers’ funds, CoolWallet has a slight edge since it is also a hardware wallet as opposed to Coinbase’s mobile app. Both wallets allow users to recover funds, in case the device is lost, stolen or broken.

Coinbase mobile wallet doesn’t provide any option to exchange assets from within the app, whereas CoolWallet allows users to trade cryptos via integration with Changelly Exchange. Since the Coinbase wallet app can be downloaded from the Play Store or App Store for free, there is no investment required. However, users need to buy the CoolWallet S card to secure their cryptos. Coinbase wallet is ideal for novice or amateur traders, whereas CoolWallet is perfect for regular or serious traders.



Portability – 4.8

Security – 4.6

Ease of use – 4.5

Cryptocurrency Support – 3.5

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