Cat S61

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Cat S61
Cat S61 black bottom
Cat S61 black front left side tilted ed
Cat S61 black left side
Cat S61 black back right side tilted ed
Cat S61 black back
Cat S61 black right side
Cat S61 black top

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“This bulldozer also works at night”


Cat S61 review: this bulldozer also works at night This time we get to review an eye-catching mobile; the Cat S61. A very robust phone with heat sensitive FLIR camera that can easily be mistaken for a builder's phone. That is partly true, but that would not do it justice. We will be happy to explain exactly how it looks here. Cat is a brand name of Caterpillar that you might know from the excavators. The company has lent its name to the Bullitt Group which markets rugged phones under the Cat name. This Cat S61 was announced in early 2018 and has been in stores since June 2018. Nevertheless, we are now reviewing it because it has a function that is especially useful in the cold days; a heat camera.

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Cat S61 product details

The Cat S61 is a rugged smartphone for professionals with a built-in FLIR thermal camera. In addition, it has several handy built-in tools that can come in handy when doing your job. We'll explain exactly which ones and whether they provide you with the right tools.

Accurate temperature reading

The Cat S61 looks a bit weird at first sight with its protruding hump on top. This is not without reason, because it contains the integrated thermal imaging camera. This so-called FLIR camera works on the basis of infrared and can therefore perceive the invisible. At a glance you can detect draft problems, leaks and short circuits. Handy for those who work with insulation or electricity. The FLIR camera displays temperatures of up to 400 degrees Celsius in high HD resolution. This is better than the S60, which is also equipped with a FLIR camera. It only went up to 120 degrees and did so in a lower VGA resolution. Heat images from the FLIR camera are superimposed on the image from the 16 megapixel camera in the MyFLIR app so that you have a clear overall picture with clear reference points. You can then save it as photo, video and even time-lapse. Information can be added such as a spot meter with the measured temperature to the comma.

Cat S61 black front left side tilted ed

Works with gloves

If we look further into the appearance of the S61, the robust housing certainly stands out. The control buttons are real knobs that you can use with gloves and the rubber back, metal side and Gorilla Glass 5 front can take a beating. The device has an IP rating of IP68 and IP69K. This is the highest achievable, making it completely dust-proof and resistant to high-pressure water. And with the MIL SPEC 810G standard, it also withstands high temperatures and salty fog. To make it waterproof, there are flaps in front of the charging port. So you have to pick it up before you can charge it. Fortunately, with a 4500 mAh large battery you don't have to do that quickly. That's more than enough for an average use of 2 days.

Main Cat S61 specifications

  • 5.2 inch large IPS screen with sturdy Gorilla Glass 5
  • Robust water and dustproof housing withstands large temperature variations
  • 16 megapixel rear camera including FLIR-heat camera
  • Space for dual nano SIM card
  • 64GB of storage memory expandable via microSD card
  • Fast mobile 4G Internet on the go thanks to LTE support
  • Fast Snapdragon 630 processor on 2,2 GHz and with 4 GB of RAM memory
  • Selfiecam with 8 megapixel large sensor

Air quality and distance meter

A built-in heat camera is not the only tool that makes the Cat S61 ideal for professionals. For example, it has a built-in laser rangefinder and even an air quality meter. The latter warns you about toxic paint fumes but also provides information about temperature and humidity. All this is kept running by Google's Android platform, version 8.0 Oreo to be precise. Cat promises an update to Android Pie but at the time of writing it is not yet known when it will arrive. The processor choice fell on the Qualcomm Snapdragon 630. This is a striking choice because we often see less powerful copies in such robust phones. This chip has 8 cores at a maximum of 2.2 GHz and has 4 GB of RAM memory at its disposal. The storage memory of 64 GB is expandable via a microSD card that is also hidden behind a cover here. Furthermore, the S61 has a built-in FM radio of which you unfortunately have to plug in headphones to work. A pity because with a thickness of 13 millimeters you would say that there was enough space inside for an integrated antenna.

Pro and cons Cat S61

  • Built-in thermal camera
  • Robust and waterproof
  • Very long battery life
  • Air quality and rangefinder
  • Pricey

Most important Cat S61 specifications

Dimensions 150 x 76 x 13 mm
Weight 145 grams
EAN code 5060472351517, 5060472351135, 5060472351128, 4053199523610, 0810296024686
Operating system
Android 8.0 (Oreo)
Color display 5.2 inch, IPS
Camera 16 MP
Processor 2.2 GHz, Qualcomm Snapdragon 630, octa core
Secondary camera 8 MP
Dust and waterproof
Rugged housing
Dual SIM
Data network
4G (LTE)
Build-in memory
Internal memory 4 GB (Size (RAM)), 64 GB (Storage)
Power supply
Battery 4500 mAh
Fast charging

All Cat S61 specifications

Video about the Cat S61

Shoot thermal images with the FLIR camera on the Cat S61. Just wash your hands under the hot and cold faucet

Alternatives of the Cat S61

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Product images are relative in size
Cat S61
Google Pixel 6a (GX7AS)
Google Pixel Fold

Photos relative in size

 Current product  
Android8.0 (Oreo)1213
Color display5.2 inch, IPS6.1 inch, OLED, hole-punch display7.6 inch, OLED
Camera16 MP12 MP, 12.2 MP, dual camera sensor10.8 MP, 10.8 MP, 48 MP
Processor2.2 GHz, Qualcomm Snapdragon 630, octa coreGoogle Tensor, octa coreGoogle Tensor G2, octa core
Secondary camera8 MP8 MP10.8 MP, 9.5 MP
Dust and waterproof
Rugged housing
Dual SIM
4G (LTE)
Internal memory4 GB (Size (RAM)), 64 GB (Storage)6 GB (Size (RAM)), 128 GB (Storage)12 GB (Size (RAM)), 256 GB (Storage), 512 GB (Storage)
Battery4500 mAh4410 mAh4821 mAh
Fast charging

Complete comparison between the Cat S61 and these alternatives or compare with other models

Questions and answers about the Cat S61