Bluebird S20 vs Bluebird EF550R - which mobile terminal to choose?
Today's mobile terminals are portable computers with a built-in code reader. They act as multi-tasking tools - they allow you to manage your warehouse, handle cashless payments, use industry applications or communicate with your team.
In the article we will compare two models from Bluebird - the S20 and the EF550R - which, although they belong to the same category, differ in design and capabilities. Find out which one will better meet your company's needs, whether you are a retail or courier business, or are responsible for a team in the field.
Bluebird S20 and EF550R - mobile terminals for field work and payment processing
.Both Bluebird models - the S20 and EF550R - are state-of-the-art wireless terminals that combine the functions of a data computer and a payment device. They can act as a mobile payment terminal, allowing you to accept card or BLIK payments anywhere - from a warehouse, to a courier route, to seasonal sales at events.
Thanks to wifi, Bluetooth and NFC connectivity and Android-based operation, they are easy to integrate with industry applications, sales systems or cash registers.
Both the Bluebird S20 and EF550R do not have a physical numeric keypad - all operations, including entering an amount or PIN code, take place on a convenient large touchscreen. This solution is convenient in the field, as it eliminates the risk of button wear, makes the device easier to clean, and allows you to switch between applications and payment functions faster.
That's about the common features. Now let's look at some guidelines that will help you choose the perfect solution.


Basic functionalities
Ergonomics and comfort
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Bluebird S20 weighs 235g, has a slim body and a large 6-inch screen with FHD+ resolution. It's a good choice if you use a payment terminal or storage device for most of the day - the light weight and comfortable operation reduce hand fatigue. The screen allows you to conveniently enter data, as well as take orders or accept payments in the field.
Bluebird EF550R is heavier (284.5-332 g) and has a smaller screen (5.5"), but is protected by Gorilla Glass. If your industry requires working in harsh conditions, the extra protection may be important.
TheBluebird S20 combined with the optional pistol grip becomes a convenient tool for quickly scanning large numbers of products, which warehouses and retail stores will appreciate. The EF550R in handheld or pistol-grip version makes it easy to work in the field - even in the rain or exposure to moisture.
Resistance and reliability
The S20 is drop-proof from a height of 1.5m (1.6m with case) - completely sufficient protection in a warehouse or store.
TheEF550R offers a higher level - IP68/IP65, multiple drops from 1.8 m, and in the Ultra Rugged version even from 2.4 m. This design will work well for a courier during a busy day, when the device is sometimes exposed to impact, moisture or dust.
Battery and work continuity
Both mobile terminals operate for a full shift (about 8-10 hours of continuous use), but the EF550R has an advantage in continuous operation: it is available with a larger battery (6160 mAh) and a hot-swap function, i.e. replacing the battery without turning off the device.
If, as an entrepreneur, you need equipment for 24/7 operation, this solution eliminates downtime.
Connectivity and additional features
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Both models run on Android, allowing you to install dedicated industry apps - from order processing to contactless payment. They support wifi/wi-fi, 5G and bluetooth, as well as nfc, which comes in handy for card readers and payment integrations.
They also support wifi/wi-fi, 5G and bluetooth, as well as nfc, which comes in handy for card readers and payment integrations.
As mobile payment terminals, they can also act as data collectors - combining cashless payment processing with inventory, delivery control or inventory management.
Importantly, unlike many older models, the Bluebird S20 and EF550R are not limited to GPRS connectivity - they support SIM cards and operate in 4G/LTE and 5G standards, so they can also transfer data and accept payments outside Wi-Fi coverage, such as in the field, at events (e.g., catering services) or during mobile point-of-sale operations.
Bluebird S20 can be upgraded with an RFID module - useful for inventory or access control. The EF550R has an advanced 1D/2D code reader that can also handle dirty, damaged or damp labels. It allows you to scan goods in the warehouse, during deliveries or in the field without slowing down.

Bluebird S20 vs Bluebird EF550R - comparison
Bluebird S20 - lightweight and versatile mobile terminal
Bluebird S20 combines a large, easy-to-read screen with a lightweight and ergonomic design. It is ideal for industries where mobility and ease of use are important, such as:
- logistics and warehousing,
- production,
- retail sales in the field.
Thanks to 5G and Wi-Fi 6E, it enables high-speed data transfer, and its removable battery allows it to operate without downtime. An optional RFID module expands its use in merchandise identification processes.
Bluebird EF550R - maximum durability and performance
Bluebird EF550R is an ultra rugged mobile terminal designed for extreme working conditions. With its rugged design and IP68/IP65 standards, it can withstand drops from 2.4 meters and intensive use in harsh environments. It will perform well in:
- transportation and field logistics,
- heavy industry,
- service in the field.
Offers a hot-swap battery, allowing the battery to be replaced without shutting down the device, and a scanner with increased tolerance for damaged barcodes.

Summary - which terminal to choose?
The choice between the Bluebird S20 and Bluebird EF550R depends primarily on the conditions in which you will use the device and your company's priorities.
- Choose the Bluebird S20 terminal if you want a lightweight, handy terminal with a large screen for easy application handling and data entry. It's a good choice for everyday work in warehousing, retail sales, internal logistics or mobile customer service, where mobility and convenience matter.
- Buy the Bluebird EF550R if your work takes place in a demanding environment - in the field, in industry, in transportation. Increased drop, dust and water resistance, hot-swap battery function and a powerful scanner make this device better able to withstand intensive, multi-hour operation.
Summary, if lightweight and comfortable operation is your priority - choose the S20. If maximum durability and uninterrupted operation are important - choose the EF550R. And if you are still not sure, get back to us! We will help you choose a terminal perfectly suited to your business. Importantly, when you buy mobile terminals from Antumo, you can immediately select a maintenance service that will ensure reliable operation throughout their lifetime.

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