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Its large 1.45-inch display stays easy to read in both bright and low light, and Bluetooth 5.3 allows for clear calls and message notifications. Battery life is another strong point, lasting up to 20 days with regular use or 100 days on standby.

It tracks heart rate, blood oxygen and sleep, and offers over 120 sport modes for activities such as hiking, cycling and running. Compatible with both Android and iPhone devices, this watch is designed for anyone who wants a reliable fitness tracker that's also ready for the outdoors.

The Military Smart Watch has been rated a high 4.8 out of 5 stars on Amazon, however, as one person wrote: "I wasn't expecting too much for the price, but this watch has really surprised me. It feels solid and well-made, the battery goes on for days, and the screen is bright and clear even in the sun.

"The health tracking and sports modes are easy to use and pretty accurate, and I really like the extra touches like the built-in torch and spare strap. It's comfy to wear, connects to my phone without any hassle, and the notifications come through quickly. Honestly, for what it costs, you get way more than you'd think."

Another wrote: "Great watch. Nice look and feel. Has different activities and a heart rate monitor, perfect for when exercising." A third person said: "Lovely smart watch that is very well made and has great functionality."

Some did have hesitations about things such as sizing, as one said: "Just have for a week. Wanted a starter smart watch to kick off a new regime. So far, so good. The battery life is decent. It's a chunky watch to wear, but I knew that before buying it. Very good value for money."

Another wrote: "Nice stylish watch. A bit more on the chunky side, so it resembles a luxury watch, stands out on the wrist. The light on the side is very powerful. Touch screen works well, even has some games on it to play when you're bored!"

Amazon shoppers snap up Bluetooth fitness watch for less than £30