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Toshiba LF621U21 4K TV Fire TV Edition Price Specs, and Best Deals

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Toshiba LF621U21 4K TV Fire TV Edition is a new generation of television with a built-in Fire TV experience that seamlessly integrates live over-the-air TV and streaming channels on a unified home screen with as much content as you want to watch from Disney+, Netflix, Prime Video, Hulu, and more.

Where to Buy Toshiba LF621U21 4K TV Fire TV Edition

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This TV also features 4K Ultra HD (2160p resolution), DTS Studio Sound, and all are equipped with an Amazon Alexa Voice Remote so you can issue commands to the Amazon smart assistant for navigating the TV interface or calling up a particular movie, show, or app.

The TV is powered by a quad-core CPU/Multi-core GPU for instant search results and fast and fluid responsiveness. It is equipped with Dolby Vision HDR that delivers enhanced 4K HDR picture quality with an expanded range of contrast and superior brightness.

Toshiba LF621U21 4K TV Fire TV Edition Key Features

  • 4K Ultra HD (2160p resolution)
  • 43-inch, 50-inch, 55-inch
  • 3 HDMI Ports
  • Fire TV built-in
  • Voice Remote with Alexa
  • 60 Hz Refresh Rate
  • Dolby Vision HDR
  • DTS Virtual X
  • Dual-band Wi-Fi
  • Quad-core CPU/Multi-core GPU
  • Hands-free control

Toshiba LF621U21 4K TV Fire TV Edition


The Toshiba LF621U21 4K TV Fire TV Edition sports a plain design, with a fairly thick glossy plastic body. It comes with a thin bezel frame around the screen.

Although the TV bezel is thin, it hosts the Toshiba logo, with a single button for power and input selection at the side in the center of the bottom bezel.

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This TV measures a dimension of 11.54 x 48.86 x 30.71 inches and still have enough space to host the single button for power and input selection at the side for manual control.

Furthermore, on the back of the Toshiba LF621U21 4K TV Fire TV Edition also comes with different interface ports on the left side this includes one USB port, three HDMI ports, and optical digital audio port, and a headphone jack.

This TV also comes with a flat panel that makes it easy to mount for when you want to hang your TV on the wall. On the back panel, there is an Ethernet port, antenna/cable connector, and an RCA composite video input face downward, at the same location. A combination power/input button rests on the lower right corner of the back of the TV, and that’s it for physical controls.

It has two well-fitted legs, although they are a bit closer together and angled more sharply, it is perfect to stand the TV on a cabinet.

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Toshiba LF621U21 4K TV Fire TV Edition is built on an LCD LED panel with 4K Ultra HD (2160p resolution) instead of the standard 1080p found on a higher variant to offer picture quality for lifelike detail, rich contrast, and brilliant colors.

Toshiba uses direct LED backlighting with no local dimming, which is quite a set back compared to other TV its range. This TV renders excellent contrast and well-defined outlines.

The Toshiba LF621U21 4K TV Fire TV Edition, that improves motion resolution 60hz refresh rate to boasts some incredible contrast and black level performance, good saturation, and accurate colors, and great clarity and picture detail across gaming and viewing modes.

This TV supports high dynamic range (HDR), hence, it is quite capable of preserving fine detail in the brightest and darkest areas of the image to offer incredible picture quality.

Toshiba LF621U21 4K TV Fire TV Edition is available in three different screen sizes including a 43-inch, 50-inch, and 55-inch, hence, you can choose from the varieties.

Smart TV

The Toshiba LF621U21 4K TV Fire TV Edition is an Android-based operating system. This makes it easy-to-navigate home screen and delivers more apps, better search, and more recommended content options than its competitors.

Toshiba delivers a superior TV experience that gets smarter every day. It lets you access most streaming services, including Amazon Video and Music, Hulu, Netflix, Sling TV, Spotify, and Twitch. Curiously, Google Play Movies & TV, as well as Google Play Music, are absent, and YouTube loads only via the Firefox or Silk web browsers.

This TV comes with support for Alexa to easily control TV functions like power, volume, navigation, playback, and input switching, and easily launch into Prime Video, and Netflix, with quick access buttons. Therefore, you can simply use your voice to do things like adjust the lights, set the temperature, and lock the door, and ease right into a movie night.

You can also pair your TV with an Echo to access Alexa through the TV hands-free and control it with your voice.

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Other Specs and Features 

The Toshiba LF621U21 4K TV Fire TV Edition has an optional basic mode which allows you to use the TV like normal TV excluding the smart features.

Furthermore, the Toshiba LF621U21 comes with a 2.0-channel audio system with support for the DTS Virtual X sound system which helps create a more immersive and quality audio experience.

This TV is also packed with a Fire TV remote. It sports a slim black plastic wand with a prominent glossy black circular navigation pad.

The remote has three menu buttons that sit above the pad and three playback buttons sit below, with power and microphone buttons on the top of the remote near a pinhole mic dedicated buttons for home, back, menu, and media playback controls.

Above all, the remote sends signals via infrared alongside Bluetooth, meaning you can use it to control the TV if the Bluetooth connection drops, without necessarily needing to re-pair the remote.

Toshiba LF621U21 4K TV Fire TV Edition Price and Availability

The Toshiba LF621U21 4K TV Fire TV Edition price starts at $319.99 for the base model and the price increases based on the display screen and features.

You can buy these TVs at reputable online stores, leading retail chains.

Toshiba LF621U21 4K TV Fire TV Edition Specs

Here are a few specs of the Toshiba LF621U21 4K TV Fire TV Edition:

General Features

  • Smart TV: Yes
  • 3D TV: –
  • Colours: BLACK
  • Video Engine: Quad-core Processor
  • Dimension (without stand): 9.3 x 38.1 x 23.9 inches‎ (43-inch),‎ 11.54 x 48.86 x 30.71 inches (50-inch)
  • Weight: 18.7 pounds (43-inch), 30 pounds (50-inch)
  • Built-in Camera: –
  • USB Playback: Yes


  • Display Type: LED
  • Screen Size: 43-inch, 50-inch, 55-inch
  • Screen Resolution: 4K UHD (3,840 x 2,160)
  • More Screen Features: 178-degree Viewing Angle, 60 Hz refresh Rate

Smart TV Features

  • Platform: Amazon’s Fire TV OS
  • Processor: Quad-core CPU/Multi-core GPU
  • Multitasking: –
  • Built-in PVR: –
  • Voice Command: Yes, Alexa
  • Face Recognition: –
  • Gesture Control: –
  • App Store: Yes
  • Social: –
  • Web Browser: Yes
  • Skype Support: –
  • Screen Mirroring: –
  • Content Sharing: –

Inputs/Outputs & Connectivity

  • HDMI Port: Yes, 3 ports
  • USB 2.0: Yes, 1 port
  • MHL Port: –
  • RF in: Yes, 1/1(Common Use for Terrestrial and Satellite)
  • AV in: –
  • AV Out: Yes
  • VGA: No
  • Component Video in (Y, Pb, Pr + Audio): –
  • Digital Audio Out: Yes, 1 Port
  • LAN: Yes
  • Built-in Wi-Fi: Yes
  • Wi-Fi Direct: Yes
  • Miracast: –
  • WiDi: –
  • Digital Broadcasting: Yes, DVB-T2CS2
  • Audio System: 6W Speaker System
  • Bluetooth: Yes
  • Scart: –
  • HDMI CEC: Yes
  • Infrared: –
  • Headphone jack: Yes

Other Features

  • TV Camera Support: –
  • TV System: Yes
  • 4k Upscaler:
  • Warranty: –
  • Remote: Yes, Toshiba Fire TV remote
  • DirectTV: –

Rated Power

  • Power Supply (Voltage): AC110-120V 50/60Hz
  • Power Consumption: 2 AAA batteries required
  • Standby Power: < 0.5W
  • Energy Efficiency Class: –

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Adeosun Ajibola
Adeosun Ajibola
Adeosun is an experienced Tech Writer specializing on Mobile Devices and Electronic Gadgets. At NaijaTechGuide, she is the Tech Specialist on Smartphones, Laptops, and TVs and since 2020 has written over 600 articles covering these verticals for the Tech Blog. She also has interests in Digital Marketing and eCommerce.

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