Whistler Pro 3700 Review

Edgar Munguia Profile image

Written by:

Updated October 10, 2022
78 Expert Rating

Investing in the best radar detector may save you hundreds and thousands of dollars by staying alert to the road ahead and preparing for what’s coming up whether it be a speed camera or a radar gun. This detector can collect signals from a variety of bands, and it will cover you at 360 degrees angle.

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Why We Like It – Whistler Pro 3700

The Whistler pro 3700 is a great laser detector that allows you to add additional modules to increase its range and performance. Some of the best features of this device include fishing out false alarms coming from newer vehicles and having versatile orientation options. This detector will catch speed traps, radar guns, and more to keep you informed while driving.

  • Real Voice Module will keep your eyes on the road
  • 4 filter mode to provide better precision
  • May be more than you budgeted for


The Whistler device is able to distinguish between real and false alerts thanks to technology like the Traffic Flow Sensor Rejection. The laser detector reads radar signals from the X band, K band, and the Ka band. The discreet tri text display will give you all the details from alert mode, and signal strength. It can be oriented vertically, horizontally, or upside down while still adjusting the text so it is legible. While you use this detector, the Laser Atalanta Stealth Mode will hide you from any other detectors around you. If you want a radar detector with a twin antenna design providing long range protection, check out our review of Escort Max Ci 360.


The Whistler Pro 3700 has a high performance antenna that will provide a longer field of range for you and give you ample time to prepare for any radar coming your way. If you would like to see more from the Whistler company, you may want to take a look at the Whistler cr85. If you want to suit up your detector with more, you can also invest in additional modules like the laser and rear antenna which will also increase your range.


This product is made from a hard plastic that may take a couple of accidental drops and still work just fine. Feel free to opt in on a protection plan if you want to extend the life of your device. Some customers have warned that they experience some malfunction after a short period of time, but these situations seem rare and may only happen to a few.

Ease of Use

While the auto orientation features allow users to mount them in any way they want, customers still had issues when it came to trying to install the product. Luckily, after installing the product on your dashboard, it will not get harder from there. On the front display, you have the option to press the power on or off, a dark option so you are not hit by bright lights at night, a city button where you can set it for 3 city modes, and a quiet option when you are tired of hearing the device notify you. If you want to find more of what Whistler offers, you may want to take a look at the Whistler CR93.


These laser radar detectors may be a bit more than other devices, but you also get many more features that you won’t find on other models such as the battery saver, 3 aux ports, KA max mode, just to name a few. This detector will also use the filter modes to reduce the noise it picks up and focus on the most important radar signals. Once you get more comfortable with the detector, you can also set speed muting and only get alerted for the certain speed range you choose. If you feel that this is too much to pay for a detector, you might want to check out a budget option like the Whistler Xtr 135.

Whistler Pro 3700 Wrap Up

The Whistler Pro 3700 is a great option to go for because of the extensive features that will keep you informed on the speed cameras and radar around you. With additional modules like the laser radar antenna and the signal strength options, you can amplify the range and power of this detector to put you in the know when you need it the most.

Edgar Munguia Profile image