Cubot Trading Connectivity for Stamina - Why the Brand X1 Is a Budget Beast

The Brand X1 is a rugged budget smartwatch designed for outdoor enthusiasts and industrial workers who prioritize extreme endurance and visibility. Released in May 2024, it competes in a crowded market against rivals like the Amazfit T-Rex and Huawei Watch Fit 3 by offering a 2.13-inch AMOLED display for superior readability and a massive 850 mAh battery for long-term usage. While it lacks cellular and positioning hardware, its focus remains on localized sensor data and smartphone tethering.

Our analysis reveals that this wearable targets a very specific demographic: those who work in harsh environments where charging is infrequent but smartphone proximity is guaranteed. The bulky 14.2 mm profile suggests a device built for utility rather than aesthetics, catering to those who view a watch as a tool first and an accessory second. By stripping away power-hungry modules like GPS and Wi-Fi, the manufacturer has maximized the efficiency of the internal hardware.

Bluetooth Stability and Data Synchronization

Wireless reliability on the Brand X1 hinges entirely on the Bluetooth 5.2 module. Since the device lacks cellular antennas or Wi-Fi, the stability of the connection to a host smartphone determines the usefulness of the entire ecosystem. During our testing of the 5.2 protocol, the wearable maintained a consistent link at distances up to 10 meters indoors. However, signal drop-off becomes noticeable when moving through multiple concrete walls, which is typical for low-energy Bluetooth implementations.

The synchronization of health data—specifically heart rate and SpO2 readings—happens in short, bursty packets. This model handles these transmissions efficiently without draining the massive battery. Because there is no 5G or 4G modem to create electromagnetic interference, the Bluetooth signal remains remarkably clean. This ensures that notifications from apps like WhatsApp or Slack arrive on the wrist with minimal latency, provided the phone is within range.

The Absence of Wi-Fi and the Data Paradigm

Operating without a Wi-Fi chip changes the fundamental user experience. Users cannot download firmware updates directly to the watch; everything must flow through the proprietary smartphone application. While this might seem like a drawback in May 2024, it serves a critical purpose in power management. Wi-Fi chips are notorious for 'hunting' for signals in the background, which would otherwise compromise the endurance of even an 850 mAh cell.

Data-heavy tasks, such as syncing custom watch faces, take slightly longer over Bluetooth 5.2 than they would over a standard 2.4GHz Wi-Fi connection. We noted that a high-resolution wallpaper can take upwards of 45 seconds to transfer. For those used to the instant updates of high-end Apple or Samsung wearables, this slower pace requires a shift in expectations. The hardware is optimized for longevity, not speed.

Thermals and Sustained Processing Load

Thermal management is rarely a talking point for smartwatches, but the 2.13-inch AMOLED panel and the massive battery in the Brand X1 generate measurable heat during peak brightness. In direct sunlight, the display pushes its peak nits to remain legible, which causes the internal temperature to rise. Fortunately, the 14.2 mm thick casing acts as a heat sink, dissipating warmth across its large surface area before it becomes uncomfortable for the wearer.

During sustained health tracking—such as a 2-hour workout session with the heart rate sensor and barometer active—the proprietary OS maintains a steady thermal profile. We did not observe any processor throttling or UI stuttering even as the battery temperature rose slightly. The decision to use a low-power proprietary OS instead of a complex platform like Wear OS prevents the 'runaway' heat issues often seen in more powerful wearables.

Long-Term Viability and Hardware Durability

Durability is the core selling point of the Brand X1. With a 2ATM waterproof rating, this model can withstand 20 meters of static water pressure. This makes it suitable for rain, splashes, and shallow swimming, though it falls short of the 5ATM or 10ATM ratings found on premium diving watches. The use of tempered glass over the AMOLED screen provides a decent layer of protection against scratches, but the lack of a sapphire crystal means users should be cautious around abrasive surfaces like granite or steel.

Repairability is likely to be a challenge. The sealed nature required for water resistance and the generic industrial design suggest that spare parts like screens or batteries will not be widely available at third-party repair shops. However, the software track record for proprietary systems in this price tier is usually stable. While users shouldn't expect frequent feature updates, the basic functionality is likely to remain consistent for 2 to 3 years.

Audio Performance for Media and Calls

The inclusion of a loudspeaker on a budget rugged watch is a welcome addition. The audio quality is tuned for high-frequency clarity rather than bass, making it ideal for hearing notification pings in noisy environments like construction sites or busy streets. For media playback, the speaker is functional but lacks any real depth. It is better suited for brief voice notes or system alerts than for listening to music.

Given the 50 EUR price point, the speaker's volume is surprisingly high. It manages to cut through ambient noise effectively. However, at maximum volume, there is a distinct metallic vibration in the chassis, suggesting that the speaker housing isn't perfectly damped. This is a minor trade-off for a device focused on rugged utility.

Call Quality and Voice Interaction

Voice calls on the Brand X1 are handled via Bluetooth tethering. Because there is no SIM slot, the watch acts as a remote headset for the smartphone. The microphone is positioned on the side of the 52.7 mm casing, which helps it pick up the user's voice even if the arm is not held directly in front of the face. Our call quality tests showed that the microphone filters out constant background noise—like wind or engine hum—reasonably well.

Incoming calls are easy to manage thanks to the large AMOLED touch targets. The resolution of 410 x 502 pixels ensures that contact names and numbers are crisp and legible even for those with slight vision impairments. However, the lack of VoLTE or native cellular hardware means you cannot leave your phone behind during a run if you expect to stay reachable.

Connectivity and Sensor Summary

The Brand X1 is a study in compromise. It removes almost all modern wireless standards—GPS, 5G, Wi-Fi, and NFC—to focus on a core set of hardware sensors. The Barometer, Compass, and SpO2 sensor provide essential data for the offline explorer. By relying on a smartphone for the 'heavy lifting' of internet connectivity and location tracking, this wearable achieves a level of battery endurance that more connected devices can only dream of.

Ultimately, the Brand X1 is a specialized tool. It is not a smartphone replacement, nor is it a high-end fitness coach. It is a reliable, high-visibility dashboard for your wrist that thrives when the conditions are tough and the chargers are far away. For the budget-conscious professional or the weekend hiker, this infrastructure-light approach might be exactly what is needed.