The Amazfit T-Rex 3 Pro adds a flashlight to the mix, and it turns out to be one of the more useful features you’ll find on the device. It’s not a screen hack or gimmick. This is a proper dual-color LED integrated into the top side of the case. It’s something you don’t miss until you have used it a few times.
Unlike screen-based flashlight apps, this LED points forward. That means the beam shines ahead while you can still view the watch face. It’s ideal when you need to see where you’re going and still want glanceable access to the time or your workout data. The watch stays visible and functional without needing to twist your wrist in awkward angles just to get some light on the path.
It’s especially handy in outdoor situations like trail running before sunrise or setting up camp after sunset. You might not always have a headlamp on hand, but this is already strapped to your wrist. When you’re hiking in low light, it gives just enough visibility to check your footing or follow a trail marker without stopping or unpacking gear.
It also proves useful in everyday moments. You can use it to find your keys in a dark hallway, check under the sofa, or navigate your house during a power cut without fumbling for your phone. A popular use case is those nightly toilet trips. The flashlight is helpful when you want minimal disruption, whether you’re moving around at night or trying not to wake someone.
How to activate
There are a few different ways to activate it. The easiest is a long press on the top left button. Once it’s on, use the upper and lower left buttons to cycle through the available modes. You can also swipe down from the home screen and tap the flashlight icon. When the light is on, a visual indicator appears on screen, and you can toggle it directly from there too.
Several different modes
The flashlight includes three white brightness levels, a red light mode, SOS flashing, and a Boost Mode. The main white LED goes up to 200 lux, which is more than enough for navigating in the dark or finding something under a bed. If you need extra power, Boost Mode ramps the brightness to 300 lux for up to 30 seconds. After that, it switches off automatically and requires a short cooldown before it can be used again.
The red light is less intense but perfect for moving around in low light without fully waking your eyes – or anyone else’s. It’s a nice touch for early risers or late-night campers.
SOS mode is also available. It flashes automatically and can be fine-tuned for brightness and color. You can enter this mode through the flashlight settings, and the controls stay consistent with the rest of the watch interface.
Seeing the flashlight in action is the best way to understand how useful it is. Cycle through the low, medium, and high white settings, switch to the red, or activate Boost Mode. The jump in brightness is obvious. Whether you’re outdoors or simply dealing with a power outage at home, this small LED can do more than you’d expect.
Essential reading: Top fitness trackers and health gadgets
The standard T-Rex 3 doesn’t include any flashlight feature, so this is exclusive to the Pro variant. After using it a few times, it becomes clear why many Garmin users already swear by this kind of setup. It’s not about novelty. It’s about having the right tool on your wrist when you need it.
Here’s a video we recorded demonstrating the flashlight.
Subscribe to our monthly newsletter! Check out our YouTube channel.
Leave a Reply