# Watch Amazfit T-Rex 3 Onyx

**URL:** https://aio.lv/en/product--onyx-39202780--11512102
**Data updated:** 2026-03-08 08:32 (EET)
**Category:** Smartwatches & Fitness Bands
**Manufacturer:** Onyx
**Manufacturer code:** 39202780
**EAN:** 6970100374889
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 286.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 237.18 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--onyx-39202780--11512102

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

The Amazfit T-Rex 3 Onyx is a rugged smartwatch designed for outdoor enthusiasts. It features a durable design, 15 military-grade certifications, and a long battery life of up to 18 days. With built-in GPS, heart rate monitoring, and over 150 sports modes, it provides comprehensive fitness tracking. The AMOLED display ensures clear visibility in sunlight, while the water resistance up to 100 meters makes it suitable for swimming and diving.

## Long description

The Amazfit T-Rex 3 Onyx is a rugged smartwatch designed for outdoor enthusiasts and active users. It combines a durable enclosure with a large AMOLED display, long battery life and comprehensive fitness tracking. The device supports built-in GPS, continuous heart rate monitoring and more than 150 sports modes. Water resistance to 100 meters and 15 military-grade certifications provide enhanced durability for demanding environments.
Advantages
The watch offers extended battery life of up to 18 days in typical use, reducing the need for frequent charging during long trips. The bright AMOLED screen ensures readable information even in strong sunlight, while the robust construction and military-grade certifications improve resistance to shocks, temperature extremes and moisture. Integrated GPS and advanced health sensors deliver accurate activity tracking and heart rate data across a wide range of sports modes.
Suitable for
 Hiking, trekking and mountaineering
 Trail running and road running
 Swimming, snorkeling and recreational diving
 Everyday fitness tracking and sleep monitoring
 Long-distance travel and multi-day adventures
Key specifications
 Display: AMOLED, high-brightness for outdoor visibility
 Battery life: up to 18 days in typical use
 Durability: rugged housing with 15 military-grade certifications
 Water resistance: rated to 100 meters suitable for swimming and diving
 Navigation: built-in GPS for outdoor tracking and route logging
 Health tracking: continuous heart rate monitoring and activity detection
 Sports modes: more than 150 preloaded exercise profiles
How to use
Charge the watch fully before first use, then pair it with your smartphone using the companion app to enable GPS syncing, activity history and notifications. Use the touchscreen and physical controls to start exercise modes, view real-time metrics and access navigation features. Wear the device snugly on the wrist during workouts to ensure accurate heart rate and motion measurements. After outdoor activities, sync recorded routes and health data to the app for analysis and backup.
Usage recommendations
For reliable measurements, wear the Amazfit T-Rex 3 Onyx on the wrist above the ulna with a comfortable, firm fit. Rinse and dry the watch after exposure to saltwater and avoid pressing buttons underwater unless the manufacturer’s instructions indicate it is safe. Enable power-saving modes during long trips to extend battery life, and regularly update firmware through the companion app to maintain GPS and sensor performance.

## FAQ

### How much does the Watch Amazfit T-Rex 3 cost, and is it available for purchase?

The price is 286.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 02.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Watch Amazfit T-Rex 3 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Onyx products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Onyx service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11512102/66720207_large.webp