# Keyboard A4Tech BLOODY B820R — Full-size USB, Opto-mechanical switches, QWERTY, RGB backlight, Black

**URL:** https://aio.lv/en/product--a4tech-b820r-rs--5034002
**Data updated:** 2026-03-07 15:10 (EET)
**Category:** Keyboards
**Manufacturer:** A4Tech
**Manufacturer code:** B820R RS
**EAN:** 4711421926997
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 100.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 83.05 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--a4tech-b820r-rs--5034002

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

A4Tech BLOODY B820R is a full-size (100%) wired USB gaming keyboard with QWERTY layout and opto-mechanical key switches. It features RGB LED backlighting and a standard straight form factor, suited for gaming and general typing. The keyboard delivers fast key actuation, consistent response and durable switch life for PC use.

## Long description

A4Tech BLOODY B820R is a full-size wired USB keyboard with a QWERTY layout and LK Optic (opto-mechanical) switches designed for PC gaming and everyday typing. The keyboard features RGB backlighting with customizable animation modes, a gunmetal aluminum alloy top panel and a straight standard form factor. Optic switch technology provides extremely fast actuation, high durability and consistent key response, while full N-key rollover and spill-resistant construction support reliable use during intensive sessions.
Advantages
The LK Optic switches deliver a 0.2 ms key response and a reduced travel distance of 3 mm for faster keystrokes compared with traditional metal switches. The switches are rated for over 100 million actuations, offering long-term durability with minimal debounce lag. Built-in RGB lighting supports 16.8 million color options, three self-customizable animation modes and six preloaded effects, all adjustable without additional drivers. The keyboard includes a gunmetal aluminum alloy top panel for improved rigidity and corrosion resistance, full N-key rollover for simultaneous key detection, and a nano-coated PCB with a smart water flow system for spill resistance and easier drainage.
Suitable for
 PC gaming where fast key response and anti-ghosting are required
 Competitive esports and high-speed typing tasks
 Home and office use that benefit from durable switches and spill resistance
 Users who want customizable RGB lighting without installing drivers
Key specifications
 Layout: Full-size (100%) QWERTY with numpad
 Connection: Wired USB
 Switch type: LK Optic opto-mechanical switches
 Actuation response: 0.2 ms
 Key travel: 3 mm
 Switch lifespan: Over 100 million key actuations
 Anti-ghosting: Full N-key rollover (NKRO)
 Backlight: RGB, 16.8 million colors, 6 preloaded effects, 3 customizable animation modes
 Top panel: Gunmetal aluminum alloy
 Protection: Nano-coated PCB and smart water flow drainage system
How to use
Connect the keyboard to a PC using the USB cable; the device is plug-and-play for standard functionality. Use FN combinations to control lighting: FN + F12 cycles lighting effects, FN + ↑/↓ adjusts brightness, and FN with number keys 0–9 stores or recalls custom RGB animation presets. No driver is required for lighting adjustments, though system-level keyboard settings can be configured in the operating system if needed. For ergonomic typing, place the keyboard on a flat surface at a comfortable distance and angle; use a wrist rest if preferred.
Usage recommendations
To maintain performance and longevity, avoid prolonged exposure to liquids; the nano-coating and drainage help against accidental spills but are not a substitute for careful use. Store custom lighting presets to numbered FN slots to quickly switch profiles, and periodically clean the keycaps and top panel with a dry or slightly damp cloth. For competitive play, enable full NKRO and verify FN lock settings before matches to ensure consistent input response.

## Specifications

### Keyboard

| Feature | Value |
|---|---|
| Device interface | USB |
| Keyboard form factor | Full-size (100%) |
| Keyboard layout | QWERTY |
| Keyboard language | English |
| Pointing device | No |
| Numeric keypad | Yes |
| Hot keys | Yes |
| Recommended usage | Gaming |
| Keyboard key switch | Opto-mechanical key switch |
| Rollover | N-key rollover |
| Keyboard keys operating life | 100 million characters |
| Keycaps material | Acrylonitrile butadiene styrene (ABS) |

### Mouse

| Feature | Value |
|---|---|
| Mouse included | No |

### Design

| Feature | Value |
|---|---|
| Product colour | Black |
| Backlight colour | Multicolour |
| Backlight | Yes |
| Ergonomic design | Yes |
| Backlight type | RGB LED |
| Protection features | Spill resistant |
| Adjustable backlight | Yes |
| Keyboard style | Straight |

### Weight & dimensions

| Feature | Value |
|---|---|
| Keyboard dimensions (WxDxH) | 445 x 132 x 37 |

### Power

| Feature | Value |
|---|---|
| Power source type | USB |

### Packaging data

| Feature | Value |
|---|---|
| Package depth | 185 mm |
| Package height | 45 mm |
| Package width | 490 mm |
| Package type | Box |

### Packaging content

| Feature | Value |
|---|---|
| Number of products included | 1 pc(s) |

### Logistics data

| Feature | Value |
|---|---|
| Master (outer) cases per intermodal container (20ft) | 100 pc(s) |

### Features

| Feature | Value |
|---|---|
| Anti-ghosting | Yes |

## FAQ

### How much does the A4Tech BLOODY B820R keyboard cost, and is it available for purchase?

The price is 100.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 02.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can A4Tech BLOODY B820R keyboard be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All A4Tech products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized A4Tech service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: device interface, keyboard form factor, keyboard layout, mouse included, keyboard language, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/5034002/59295461_large.webp