---
product_id: 724431570
title: "T-Rex Ultra Smart Watch 47mm for Men, 20-Day Battery Life, 30m Freediving, Dual-Band GPS, Mud-Resistant, 100m Water-Resistant, Military-Grade Outdoor Sports Watch, for Android iPhone, Black"
brand: "amazfit"
price: "A$925"
currency: AUD
in_stock: true
reviews_count: 5
category: "Amazfit"
url: https://www.desertcart.com.au/products/724431570-t-rex-ultra-smart-watch-47mm-for-men-20-day
store_origin: AU
region: Australia
---

# 100m water resistance & 30m freediving 20-day battery life Dual-band GPS with 6 satellite systems T-Rex Ultra Smart Watch 47mm for Men, 20-Day Battery Life, 30m Freediving, Dual-Band GPS, Mud-Resistant, 100m Water-Resistant, Military-Grade Outdoor Sports Watch, for Android iPhone, Black

**Brand:** amazfit
**Price:** A$925
**Availability:** ✅ In Stock

## Summary

> 🕶️ Adventure-Ready, Power-Packed, and Built to Impress — Own the Outdoors in Style!

## Quick Answers

- **What is this?** T-Rex Ultra Smart Watch 47mm for Men, 20-Day Battery Life, 30m Freediving, Dual-Band GPS, Mud-Resistant, 100m Water-Resistant, Military-Grade Outdoor Sports Watch, for Android iPhone, Black by amazfit
- **How much does it cost?** A$925 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/724431570-t-rex-ultra-smart-watch-47mm-for-men-20-day)

## Best For

- amazfit enthusiasts

## Why This Product

- Trusted amazfit brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Seamless Smart Sync:** Effortlessly connect with Android/iOS, fitness apps, GoPro, and Bluetooth devices for a fully integrated experience.
- • **Endurance Beyond Limits:** Unmatched 20-day battery keeps you powered through every adventure without a recharge.
- • **Dive Deep, Stay Connected:** Certified 100m water resistance and 30m freediving support for fearless aquatic exploration.
- • **Military-Grade Ruggedness:** Built tough with 316L stainless steel, mud resistance, and passed 15 military-grade tests for extreme conditions.
- • **Precision Navigation Mastery:** Dual-band GPS with L1 & L5 signals plus six satellite systems ensures pinpoint route tracking worldwide.

## Overview

The Amazfit T-Rex Ultra is a military-grade outdoor smartwatch designed for the modern adventurer. Featuring a robust 316L stainless steel and mud-resistant build, it offers a stunning HD AMOLED display with 1,000 nits brightness. It supports freediving up to 30 meters and withstands water pressure up to 100 meters, making it ideal for all water sports. Dual-band GPS with six satellite systems delivers ultra-precise navigation, while a massive 20-day battery life ensures you stay connected on extended journeys. Compatible with Android and iOS, it syncs with popular health and fitness apps and supports Bluetooth accessories, making it the ultimate companion for professionals who demand durability, precision, and smart connectivity.

## Description

Notes: 1)Indoor positioning services are not supported. Positioning speed and accuracy may be affected by the surrounding environment. The number of satellites connected to simultaneously, and specific satellite connections, may depend on your location. 2)The Amazfit T-Rex Ultra can be used as a map browsing tool to import OSM map files. Display of offline maps is only compatible with sports modes which support GPS positioning. The downloaded offline map must match your real location to be displayed, and a route file must be imported for navigation – it's not possible to choose a point on the offline map for navigation. 3) Adidas Running requires Zepp App version 7.1.0 or higher. Strava, Relive, and adidas Running availability may vary depending on your country or region. Apple Health is only available on iOS devices, and Google Fit is only available on Android devices. 4) The battery life may vary according to the settings, operation conditions and other factors. So the actual result may differ from the laboratory data. 5) This product and the Zepp App are not medical devices and cannot be used for medical purposes, or as basis for diagnosis of any medical condition. 6)The material used for the packaging box is 100% environmentally friendly, with naturally degradable materials including mineral-free inks and anodized aluminum used in the bronzing process, as well as naturally degradable packaging materials for plastic. 7)Call Quick Reply is only supported by Android devices with Zepp App version 6.10.0 or higher version installed..

Review: Un reloj muy robusto, una pila de muchísima duración, mediciones muy precisas y en general una experiencia de uso excepcional. Muy recomendado.
Review: Ok, everybody has terrible bands these days, so I am deducting no points. The band in the picture is the Hēmsut leather band you can get separately. I am converting from a Fitbit Versa 4 that has served me well, but I did it a battery injury while in a hospital bed FOR 2 MONTHS and it now needs to be charged daily to log my heart rhythm and SpO2 levels, which is too easy to forget. I need the hourly logs to have with me for cardiologist visits as we monitor my artificial heart valve, 20 years old and still running! The T-Rex Ultra is OVERKILL for what I want, but I was after the battery life and water resistance (I’ve murdered a couple watches in a swimming pool, finding that “10m water resistance” doesn’t compete with dive ratings) which it covers across the board. I charged it when it arrived, then had to run through 3 firmware upgrades to get to the current OS, Zepp OS 4. That was 3 days ago. The watch, despite having hourly testing on, WiFi active, and live Accuweather running, still has 76% left on the battery. That’s awesome! A lot of the workout tools I have only poked at, not put to use fully, but I am recovering from muscle atrophy following my hospitalization. When the weather warms up, the pup and I will be putting it to use and if there are issues, I’ll come back and add it. Overall, considering I was looking at a Garmin watch for 3 times the cost, I’ve compared capabilities between it (my close friend owns it) and the Amazfit holds a dead even rating. That says a lot! Thus far, I’ve banged the glass into my guitar and the inside of my server with absolutely no scratching. The steel frame helps. Overall, for health needs, I can log everything in Apple Health on my iPhone, export to a spreadsheet in Google Docs, and have detailed info for my docs when I have appointments. I couldn’t ask for better usability. 100% cat compatible!

## Features

- Stainless Steel & Mud-resistant Design: Constructed with super-strong 316L stainless steel and a patented mud-resistant bridge and buttons, Amazfit T-Rex Ultra is built to withstand any kind of action. The smartwatch's HD AMOLED display can reach a peak brightness of 1,000 nits for ultra-clear visibility in any environment. Adjustable lugs ensure maximum comfort for the entirety of your epic adventures, and you can enjoy ultimate control with a responsive touchscreen and four convenient buttons.
- 30m Freediving Support: As the ultimate multi-environment outdoor smartwatch, the Amazfit T-Rex Ultra supports indoor and outdoor freediving to a depth of up to 30 meters. It can also resist the equivalent of up to 100 meters’ water pressure, making it perfect for all your swimming, surfing and kitesurfing activities.
- Dual-band GPS & Route Navigation: The smartwatch utilizes both L1 and L5 signals for incredibly precise dual-band GPS positioning, and supports six satellite systems for greater global coverage. Import a route file to the watch along with a corresponding Offline Map, and navigate with professional-level environmental understanding.
- Mighty 20-day Battery Life: Experience energy beyond extinction, with battery life that can last a super-long 20 days. The sports watch also introduces a new Endurance GPS battery mode for those who love to lose themselves in nature for long periods of time, plus a new Automatic GPS battery mode which intelligently adjusts GPS settings based on signal strength, to help conserve power.
- -30℃ Ultra-low Temperature Operation: Built for the brave, the watch is tough enough to be operated in extreme temperatures as low as -30℃, thanks to its specially designed circuitry system and battery. So not only can the watch body physically resist the cold, but you can keep using the watch's functions as the conditions get more intense.
- Military-grade Toughness: Resistant to extreme 70℃ heat and -40℃ cold - as well as humidity, shock and more - this outdoor smartwatch has proved its toughness by passing 15 military-grade tests. Understand your surroundings better with the built-in compass and barometer, along with environmental reminders and a host of other useful features.
- Sync To Your Favorite Health Apps: Share completed routes and activity data from your legendary adventures with fitness communities like Strava, adidas Running, Komoot and Relive, along with smartphone apps like Apple Health and Google Fit.
- Ready for Action Shots: Thanks to the powerful Bluetooth connectivity the Amazfit T-Rex Ultra supports music playback, heart rate belts and cycling power meters and can even connect to your GoPro action camera. Connection: WLAN 2.4GHz, Bluetooth 5.0 BLE.
- Prepared for Any Adventure: Brave your journey with the T-Rex Ultra smartwatch adventure features including - Compass, Air Pressure, Altitude, Altitude SpO₂, Sunrise / Sunset, Ocean Tides, Storm Warning Alerts, and Freediving Water Temperature
- Supported Devices: Compatible with Android 7.0 and above, iOS 12.0 and above devices.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BV2SM914 |
| Department | mens |
| Item model number | A2142-Black |
| Manufacturer | Amazfit |
| Product Dimensions | 4.72 x 4.72 x 1.35 cm; 308 g |

## Product Details

- **Battery capacity:** 700
- **Connectivity technology:** Bluetooth
- **Memory storage capacity:** 2.3 GB
- **Operating system:** Zepp OS
- **Special features:** 30m Freediving Support, Altitude Assistant, Mud-resistant, Ultra-low Temperature Operation

## Images

![T-Rex Ultra Smart Watch 47mm for Men, 20-Day Battery Life, 30m Freediving, Dual-Band GPS, Mud-Resistant, 100m Water-Resistant, Military-Grade Outdoor Sports Watch, for Android iPhone, Black - Image 1](https://m.media-amazon.com/images/I/71w6yIZ4i4L.jpg)

## Available Options

This product comes in different **Color, Style** options.

## Questions & Answers

**Q: So; first on the market was the amazfit pro; then cames out the amazfit pro-2 and now the newest is the amazfit pro ultra?**
A: The very first model for the T-Rex line is the T-Rex and in the order after are T-Rex Pro, T-Rex 2, and T-Rex Ultra. 

Michael | Amazfit Support

**Q: Any reviews about the pro ultra? i only found from the pro and the pro-2. the ultra price is twice of the pro 2 so i want to read opinions from users**
A: I like it better than my 300 Dollar watch but it has no sound, the watch has a listen to music option but you can't.

**Q: Que diferencia hay , entre el t rex pro 2 y este reloj ??**
A: Eso no lo sé pero son los mismos en la descripción del reloj está está ha salido muy bueno lo mejor es la duración de la batería

**Q: Why is the t-rex ultra so expensive? the additional build quality and minor features simply don't justify the high expense**
A: It's a bit more rugged and capable of tougher use. The price point is really up to you.  I went with the T-Rex 2 to get to a price point I thought was more feasible.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***A on 24 January 2024*

Un reloj muy robusto, una pila de muchísima duración, mediciones muy precisas y en general una experiencia de uso excepcional. Muy recomendado.

### ⭐⭐⭐⭐⭐ Review
*by E***4 on 13 February 2025*

Ok, everybody has terrible bands these days, so I am deducting no points. The band in the picture is the Hēmsut leather band you can get separately. I am converting from a Fitbit Versa 4 that has served me well, but I did it a battery injury while in a hospital bed FOR 2 MONTHS and it now needs to be charged daily to log my heart rhythm and SpO2 levels, which is too easy to forget. I need the hourly logs to have with me for cardiologist visits as we monitor my artificial heart valve, 20 years old and still running! The T-Rex Ultra is OVERKILL for what I want, but I was after the battery life and water resistance (I’ve murdered a couple watches in a swimming pool, finding that “10m water resistance” doesn’t compete with dive ratings) which it covers across the board. I charged it when it arrived, then had to run through 3 firmware upgrades to get to the current OS, Zepp OS 4. That was 3 days ago. The watch, despite having hourly testing on, WiFi active, and live Accuweather running, still has 76% left on the battery. That’s awesome! A lot of the workout tools I have only poked at, not put to use fully, but I am recovering from muscle atrophy following my hospitalization. When the weather warms up, the pup and I will be putting it to use and if there are issues, I’ll come back and add it. Overall, considering I was looking at a Garmin watch for 3 times the cost, I’ve compared capabilities between it (my close friend owns it) and the Amazfit holds a dead even rating. That says a lot! Thus far, I’ve banged the glass into my guitar and the inside of my server with absolutely no scratching. The steel frame helps. Overall, for health needs, I can log everything in Apple Health on my iPhone, export to a spreadsheet in Google Docs, and have detailed info for my docs when I have appointments. I couldn’t ask for better usability. 100% cat compatible!

### ⭐ Review
*by F***O on 27 December 2024*

Compre este smartwatch y al quererlo configurar me pide contraseña, es normal o será que no es nuevo ? y si fuera normal cual es la contraseña

## Frequently Bought Together

- Amazfit T-Rex Ultra Tactical Smart Watch for Men 47mm, Military-Grade Sports Watch, Dual-Band GPS, 20-Day Battery, Android & iPhone, Black
- Supershieldz (3 Pack) Designed for Amazfit T-Rex and Amazfit T-Rex Pro Tempered Glass Screen Protector, Anti Scratch, Bubble Free
- SMITHA Watch Bands Compatible with Huami Amazfit T-Rex/T-Rex 2/T-Rex Pro/T-Rex Ultra, Rugged Nylon Sports Strap With Woven Loop Design

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-21*