Specs are listed as a photo on the link,
But the item seems decent enough, if interested might try it
Yubico Yubikey 2FA NFC Security Key - Blue
The Yubikey Security Key features NFC and USB-A, so can be used on Computers, laptops and mobile devices. It's the budget friendly version in the Yubikey range and works out of the packet with popular online services like Google, Microsoft, Dashlane, Keeper, Github, Dropbox, Facebook and Twitter.
The perfect security key for NFC authentication on Android, Windows 10 and iOS devices and applications. It also has a standard USB-A port for connecting to computers and laptops.
The Security Key NFC by Yubico simplifies your login and secures your account on hundreds of services like Gmail, Facebook, Skype, Outlook, Dashlane and more. Usernames and passwords are not enough to protect your accounts. Using a security key as a form of two-factor authentication is a simple and proven method for locking down your accounts and keeping them secure.
The Security Key NFC is FIDO and FIDO2 certified. It works with Google Chrome or any FIDO-compliant application on Windows, Mac OS or Linux and with applications that provide FIDO or FIDO2 support through Chrome, Firefox, or Edge browsers.
Strong Authentication
The Security Key Series offers superior security by combining hardware-based authentication and public key cryptography to effectively defend against phishing attacks and eliminate account takeovers. It offers support for FIDO U2F and FIDO 2.
Passwordless Enabled
The Security Key Series helps organizations accelerate to a passwordless future by providing support for the FIDO2 protocol. FIDO2 supports not only today's two-factor authentication but also paves the way for eliminating weak password authentication, with strong single factor hardware-based authentication.
Easy, Fast and Reliable
The Security Key Series provides a simple and intuitive authentication experience that users find easy to use, ensuring rapid adoption and organizational security. With authentication speeds up to 4X faster than OTP or SMS based authentication, security keys do not require a battery or network connectivity, making authentication always accessible.
Reduce IT Operational Costs
The ease of use and reliability of security keys is proven to reduce password support incidents by 92%. This was documented in a research paper by Google, describing the Google employee rollout to more than 70 countries.
Modern Authentication from the Industry Leader
The YubiKey is the trusted secure authentication choice for the largest technology, finance, and retail companies in the world. This includes 9 of the top 10 technology companies, 4 of the top 10 US banks, and 2 of the top 3 global retailers. Companies including Google, Facebook, Salesforce and thousands more trust Yubico to protect account access to computers, networks and online services.
Seems like cool tech, but I don't see the purpose?
I already use 2FA on my Android using Google Auth or Authy for all apps that support it (which is almost everything)